a short railroad track, opening onto a main track at one or both ends, on which one of two meeting trains is switched until the other has passed.
any of several varieties of weatherproof facing for frame buildings, composed of pieces attached separately as shingles, plain or shaped boards, or of various units of sheet metal or various types of composition materials.

1595–1605; side1 + -ing1

unsiding, adjective Unabridged


1 [sahyd]
one of the surfaces forming the outside of or bounding a thing, or one of the lines bounding a geometric figure.
either of the two broad surfaces of a thin, flat object, as a door, a piece of paper, etc.
one of the lateral surfaces of an object, as opposed to the front, back, top, and bottom.
either of the two lateral parts or areas of a thing: the right side and the left side.
either lateral half of the body, especially of the trunk, of a human or animal.
the dressed, lengthwise half of an animal's body, as of beef or pork, used for food.
an aspect or phase, especially as contrasted with another aspect or phase: to consider all sides of a problem.
region, direction, or position with reference to a central line, space, or point: the east side of a city.
a slope, as of a hill.
one of two or more contesting teams, groups, parties, etc.: Our side won the baseball game.
the position, course, or part of a person or group opposing another: I am on your side in this issue.
line of descent through either the father or the mother: grandparents on one's maternal side.
the space immediately adjacent to something or someone indicated: Stand at my side.
Informal. a side dish, as in a restaurant: I'll have a hamburger and a side of French fries.
Usually, sides. Theater.
pages of a script containing only the lines and cues of a specific role to be learned by a performer.
the lines of the role.
Nautical. the hull portion that is normally out of the water, located between the stem and stern to port or starboard.
Billiards. English ( def 8 ).
either of the two surfaces of a phonograph record or the two tracks on a audiotape.
Slang. a phonograph record.
Chiefly British Slang.
affected manner; pretension; assumed haughtiness: to put on side.
impudence; gall: He has a lot of side.
being at or on one side: the side aisles of a theater.
coming from one side.
directed toward one side: a side blow.
subordinate or incidental: a side issue.
Verb phrases, past and past participle sided, present participle siding.
side with/against, to favor or support or refuse to support one group, opinion, etc., against opposition; take sides, as in a dispute: He always sides with the underdog.
on the side, Informal.
separate from the main issue or point of interest.
in addition to one's regular, or known work, interest, relationships, etc.: She tried selling cosmetics on the side. He dates another girl on the side.
as a side dish: a hamburger with French fries on the side.
on the adjective side, rather more than less; tending toward (the quality or condition specified): This cake is a little on the sweet side.
side by side,
next to one another; together.
closely associated or related; in proximity: A divided city in which democracy and communism must live side by side.
take sides, to give one's support to one person or group in a dispute; be partial to one side: We were careful not to take sides for fear of getting personally involved.
the far side, the farther or opposite side: the far side of the moon.

before 900; Middle English; Old English sīde (noun); cognate with Dutch zijde, German Seite, Old Norse sītha

sideless, adjective

23. minor, lesser. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To siding
World English Dictionary
side (saɪd)
1.  a line or surface that borders anything
2.  geometry
 a.  any line segment forming part of the perimeter of a plane geometric figure
 b.  another name for face
3.  either of two parts into which an object, surface, area, etc, can be divided, esp by a line, median, space, etc: the right side and the left side Related: lateral
4.  either of the two surfaces of a flat object: the right and wrong side of the cloth
5.  a surface or part of an object that extends vertically: the side of a cliff
6.  either half of a human or animal body, esp the area around the waist, as divided by the median plane: I have a pain in my side
7.  the area immediately next to a person or thing: he stood at her side
8.  a district, point, or direction within an area identified by reference to a central point: the south side of the city
9.  the area at the edge of a room, road, etc, as distinguished from the middle
10.  aspect or part: look on the bright side; his cruel side
11.  one of two or more contesting factions, teams, etc
12.  a page in an essay, book, etc
13.  a position, opinion, etc, held in opposition to another in a dispute
14.  line of descent: he gets his brains from his mother's side
15.  informal a television channel
16.  billiards, snooker US and Canadian equivalent: English spin imparted to a ball by striking it off-centre with the cue
17.  slang (Brit) insolence, arrogance, or pretentiousness: to put on side
18.  on one side set apart from the rest, as provision for emergencies, etc, or to avoid muddling
19.  on the heavy side tending to be too heavy
20.  on the side
 a.  apart from or in addition to the main object
 b.  as a sideline
 c.  (US) as a side dish
 d.  bit on the side See bit
21.  side by side
 a.  close together
 b.  (foll by with) beside or near to
22.  take sides to support one group, opinion, etc, as against another
23.  being on one side; lateral
24.  from or viewed as if from one side
25.  directed towards one side
26.  not main; subordinate or incidental: side door; side road
vb (usually foll by with)
27.  to support or associate oneself with a faction, interest, etc
28.  (tr) to provide with siding or sides
29.  dialect (Northern English) (tr; often foll by away or up) to tidy up or clear (dishes, a table, etc)
Related: lateral
[Old English sīde; related to sīd wide, Old Norse sītha side, Old High German sīta]

siding (ˈsaɪdɪŋ)
1.  a short stretch of railway track connected to a main line, used for storing rolling stock or to enable trains on the same line to pass
2.  a short railway line giving access to the main line for freight from a factory, mine, quarry, etc
3.  (US), (Canadian) material attached to the outside of a building to make it weatherproof

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. side "flanks of a person, the long part or aspect of anything," from P.Gmc. *sithon (cf. O.S. sida, O.N. siða, M.Du. side, O.H.G. sita, Ger. Seite), from adj. *sithas "long" (cf. O.E. sid "long, broad, spacious," O.N. siðr "long, hanging down"), from PIE base *se- "long, late" (cf. L. serus
"late," Lith. sietuva "deep place in a river," M.Ir. sith, M.Breton hir "long"). Original sense preserved in countryside. Fig. sense of "position or attitude of a person or set of persons in relation to another" (cf. choosing sides) first recorded mid-13c. Meaning "music on one side of a phonograph record" is first attested 1936. Phrase side by side "close together and abreast" is recorded from c.1200. Restaurant phrase on the side "apart from the main dish" is attested from 1884, Amer.Eng. Side-splitting "funny" is first attested 1860. Sidebar "secondary article in a newspaper" is recorded from 1948. Sideman "supporting musician" is first attested 1936. Sideboard "table placed near the side of a room" is from c.1300.

c.1600, "a taking of sides in a conflict or debate," from side (q.v.). First attested 1825 in the railroad sense; 1829 in the architectural sense of "boarding on the sides of a building."

"to cut into sides" (of meat), c.1470, from side (n.). Meaning "to support one of the parties in a discussion, dispute, etc.," is first attested 1591, from side (n.) in the fig. sense; earlier to hold sides (c.1489).
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

side definition

  1. n.
    a side of a record (recording). (Refers to older vinyl recording.) : Let's cruise over to Sam's pad and hear some sides.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
Cite This Source
Example sentences
Then the plumbing and electrical foreman come in and mark their details,
  followed by the drywallers, siding and painters.
You'll come across sounding as if you are siding with or against someone.
And to make things worse, the media and university are obviously siding with
  these provocateurs.
Those who argue that animals should not be used for this purpose are siding
  against human health and welfare.
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