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bobbing

[bob-ing] /ˈbɒb ɪŋ/
noun, Radar.
1.
the effect on a radarscope of the fluctuation of a radar echo because of alternating interference and reinforcement of the reflected waves.
Origin
bob1 + -ing1

bob1

[bob] /bɒb/
noun
1.
a short, jerky motion:
a bob of the head.
verb (used with object), bobbed, bobbing.
2.
to move quickly down and up:
to bob the head.
3.
to indicate with such a motion:
to bob a greeting.
verb (used without object), bobbed, bobbing.
4.
to make a jerky motion with the head or body.
5.
to move about with jerky, usually rising and falling motions:
The ball bobbed upon the waves.
Verb phrases
6.
bob up, to emerge or appear, especially unexpectedly:
A familiar face bobbed up in the crowd.
Origin
1400-50; late Middle English bobben. See bob2

bob2

[bob] /bɒb/
noun
1.
a style of short haircut for women and children.
2.
a docked horse's tail.
3.
a dangling or terminal object, as the weight on a pendulum or a plumb line.
4.
a short, simple line in a verse or song, especially a short refrain or coda.
5.
Angling.
  1. a knot of worms, rags, etc., on a string.
  2. a float for a fishing line.
6.
a bobsled or bob skate.
7.
Scot. a bunch, cluster, or wad, especially a small bouquet of flowers.
8.
Obsolete, walking beam.
verb (used with object), bobbed, bobbing.
9.
to cut short; dock:
They bobbed their hair to be in style.
verb (used without object), bobbed, bobbing.
10.
to try to snatch floating or dangling objects with the teeth:
to bob for apples.
11.
Angling. to fish with a bob.
Origin
1300-50; Middle English bobbe (noun) spray, cluster, bunch (of leaves, flowers, fruit, etc.); of uncertain origin

bob3

[bob] /bɒb/
noun
1.
a tap; light blow.
2.
a polishing wheel of leather, felt, or the like.
verb (used with object), bobbed, bobbing.
3.
to tap; strike lightly.
Origin
1350-1400; Middle English bobben to strike, beat, perhaps imitative See bop2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for bobbing
  • You've seen plastic containers washed up on the beach or bobbing around docks.
  • The next day they were all bobbing in the dark water, dead.
  • If a song's tempo is changed without changing its pitch, his head-bobbing and leg-lifting change time to match.
  • Its up-and-down bobbing motion is used to pressurise water stored in the tube below the surface.
  • Even if driven underground for a while, they have an unsettling habit of bobbing up later.
  • The crane's arm is now completely outstretched and the bucket is bobbing up and down precariously.
  • The name arose from the bobbing motion of the wooden beam.
  • Search pilots could see beer coolers and other flotsam bobbing in the water below.
  • The sight of flamingos bobbing their heads in unison almost in rhythm with the gun blasts is almost hypnotic.
  • Iguanas in the wild communicate by bobbing their heads, and this realistic moving model is no exception.
British Dictionary definitions for bobbing

bob1

/bɒb/
verb bobs, bobbing, bobbed
1.
to move or cause to move up and down repeatedly, as while floating in water
2.
to move or cause to move with a short abrupt movement, as of the head
3.
to make (a bow or curtsy) the little girl bobbed before the visitor
4.
(intransitive) usually foll by up. to appear or emerge suddenly
5.
(intransitive; foll by under, below, etc) to disappear suddenly, as beneath a surface
6.
(intransitive) usually foll by for. to attempt to get hold (of a floating or hanging object, esp an apple) in the teeth as a game
noun
7.
a short abrupt movement, as of the head
8.
a quick curtsy or bow
9.
(bell-ringing) a particular set of changes
10.
(angling)
  1. short for bobfloat
  2. the topmost fly on a cast of three, often fished bobbing at the surface
  3. this position on a wet-fly cast
Word Origin
C14: of uncertain origin

bob2

/bɒb/
noun
1.
a hairstyle for women and children in which the hair is cut short evenly all round the head
2.
a dangling or hanging object, such as the weight on a pendulum or on a plumb line
3.
a polishing disc on a rotating spindle. It is usually made of felt, leather, etc, impregnated with an abrasive material
4.
short for bob skate, bobsleigh
5.
a runner or pair of runners on a bobsled
6.
(angling) a small knot of worms, maggots, etc, used as bait
7.
a very short line of verse at the end of a stanza or preceding a rhyming quatrain (the wheel) at the end of a stanza
8.
a refrain or burden with such a short line or lines
9.
a docked tail, esp of a horse
10.
(Brit, dialect) a hanging cluster, as of flowers or ribbons
verb bobs, bobbing, bobbed
11.
(transitive) to cut (the hair) in a bob
12.
(transitive) to cut short (something, esp the tail of an animal); dock or crop
13.
(intransitive) to ride on a bobsled
Word Origin
C14 bobbe bunch of flowers, perhaps of Celtic origin

bob3

/bɒb/
verb bobs, bobbing, bobbed
1.
to tap or cause to tap or knock lightly (against)
noun
2.
a light knock; tap
Word Origin
C13 bobben to rap, beat; see bop²

bob4

/bɒb/
noun (pl) bob
1.
(Brit) (formerly) an informal word for a shilling (sense 1)
Word Origin
C19: of unknown origin

Bob

/bɒb/
noun
1.
(slang) Bob's your uncle, everything is or will turn out all right
Word Origin
C19: perhaps from pet form of Robert
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for bobbing

bob

v.

"move with a short, jerking motion," late 14c., probably connected to Middle English bobben "to strike, beat" (late 13c.), perhaps of echoic origin. Another early sense was "to make a fool of, cheat" (early 14c.). Related: Bobbed; bobbing. The sense in bobbing for apples (or cherries) recorded by 1799.

n.

"act of bobbing," 1540s, from bob (v.1). As a slang word for "shilling" it is attested from 1789, but the signification is unknown.

"short hair," 1680s, attested 1570s in sense of "a horse's tail cut short," from earlier bobbe "cluster" (as of leaves), mid-14c., a northern word, perhaps of Celtic origin (cf. Irish baban "tassel, cluster," Gaelic babag). Used over the years in various senses connected by the notion of "round, hanging mass," e.g. "weight at the end of a line" (1650s). The hair sense was revived with a shift in women's styles early 20c. (verb 1918, noun 1920). Related words include bobby pin, bobby sox, bobsled, bobcat.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for bobbing

bob

Related Terms

boob job, nose job


Bob

modifier

: Bob car/ Bob clothes

noun

A Bedouin or Iraqi (1990s+ Gulf War Army)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for bobbing

BOB

  1. best of breed
  2. Bolivia-boliviano
  3. Bureau of the Budget
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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14
19
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