twin

1 [twin] noun, adjective, verb, twinned, twin·ning.
noun
1.
either of two children or animals brought forth at a birth.
2.
either of two persons or things closely related to or closely resembling each other.
3.
twin bed.
4.
Also called twin room. a type of hotel accommodation with twin beds, for occupancy by two persons. Compare double ( def 13 ).
5.
Also called hemitrope. Crystallography. a compound crystal consisting of two or more parts or crystals definitely oriented each to the other; macle.
6.
Twins, Astronomy, Astrology. the constellation or sign of Gemini.
adjective
7.
being a twin or twins: twin sisters.
8.
being two persons or things closely related to or closely resembling each other.
9.
being one of a pair; identical: a twin bracelet; a twin peak.
10.
consisting of two similar parts or elements joined or connected: a twin vase.
11.
Botany, Zoology. occurring in pairs; didymous.
12.
Crystallography. of the nature of a twin; hemitrope.
13.
twofold or double.
00:10
Twins is always a great word to know.
So is callithumpian. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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verb (used with object)
14.
to bring together in close relationship; pair; couple.
15.
to furnish a counterpart to or a replica of; match.
16.
Informal. to divide or convert into two, parts, similar items, etc.: The old movie palace will be twinned, making two smaller theaters.
17.
Informal. to link or combine with: The new grocery store is twinned with a restaurant.
18.
Crystallography. to form into a twin.
19.
Obsolete. to give birth to as twins.
verb (used without object)
20.
to give birth to twins.
21.
to be paired or coupled.
Origin:
before 900; Middle English; Old English twinn (adj.), getwinn (noun and adj.); akin to Old Frisian twīne, Old Norse tvinnr double, Gothic twaihnai

Dictionary.com Unabridged

twin

2 [twin]
verb (used with object), verb (used without object), twinned, twin·ning. Scot.
twine2.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
twin (twɪn) [Click for IPA pronunciation guide]
 
—n
1.  a.  either of two persons or animals conceived at the same time
 b.  identical See also fraternal (as modifier): a twin brother
2.  a.  either of two persons or things that are identical or very similar; counterpart
 b.  (as modifier): twin carburettors
3.  Also called: macle a crystal consisting of two parts each of which has a definite orientation to the other
 
—vb , twins, twinning, twinned
4.  to pair or be paired together; couple
5.  (intr) to bear twins
6.  (intr) (of a crystal) to form into a twin
7.  archaic (intr) to be born as a twin
8.  (tr)
 a.  to create a reciprocal relation between (two towns in different countries); pair (a town) with another in a different country
 b.  (intr) (of a town) to be paired with a town in a different country
 
[Old English twinn; related to Old High German zwiniling twin, Old Norse tvinnr double]
 
'twinning
 
—n

Twins (twɪnz) [Click for IPA pronunciation guide]
 
—pl n
the Twins the constellation Gemini, the third sign of the zodiac

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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Etymonline
Word Origin & History

twin
O.E. twinn "consisting of two, twofold, double," probably ultimately from P.Gmc. *twinjaz (cf. O.N. tvinnr, O.Dan. tvinling, Du. tweeling, Ger. zwillung), from PIE *dwisno- (cf. L. bini "two each," Lith. dvynu "twins"), from *dwi- "double," from base *dwo- "two" (see two). The
verb meaning "to combine two things closely" is recorded from c.1394. The noun developed from O.E. getwinn "double."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

twin (twĭn)
n.
One of two offspring born at the same birth. adj.

  1. Being two or one of two offspring born at the same birth.

  2. Consisting of two identical or similar parts; double.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
twin   (twĭn)  Pronunciation Key 

  1. One of two offspring born of a single gestation. Identical twins result from the division of a fertilized egg. Fraternal twins result from the fertilization of two separate eggs at the same time.

  2. A crystal structure consisting of two intergrown crystals that are mirror images of each other. Mineral twins can form as result of defective crystal growth in response to stress from rock deformation or during magma cooling.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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