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chopper

[chop-er]
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noun
  1. a person or thing that chops.
  2. a short ax with a large blade, used for cutting up meat, fish, etc.; butcher's cleaver.
  3. a prehistoric implement made by striking flakes off one or both sides of a stone, considered the oldest known worked stone tool.
  4. choppers, Slang. the teeth.
  5. Informal. a helicopter.
  6. Slang. a motorcycle.
  7. a device for interrupting an electric current or a beam of light at regular intervals.
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verb (used without object)
  1. Informal.
    1. to travel by helicopter: We choppered into midtown from the airport.
    2. to travel by motorcycle.
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Origin of chopper

1545–55; 1950–55 for def 5; chop1 + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for choppers

chopper

noun
  1. mainly British a small hand axe
  2. a butcher's cleaver
  3. a person or thing that cuts or chops
  4. an informal name for a helicopter
  5. mainly British a slang name for penis
  6. a device for periodically interrupting an electric current or beam of radiation to produce a pulsed current or beamSee also vibrator (def. 2)
  7. a type of bicycle or motorcycle with very high handlebars and an elongated saddle
  8. NZ a child's bicycle
  9. obsolete, slang, mainly US a sub-machine-gun
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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

Word Origin and History for choppers

chopper

n.

1550s, "one who chops," agent noun from chop (v.1). Meaning "meat cleaver" is by 1818. Meaning "helicopter" is from 1951, Korean War military slang (cf. egg-beater); as a type of stripped-down motorcycle (originally prefered by Hell's Angels) from 1965.

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Online Etymology Dictionary, © 2010 Douglas Harper

choppers in Science

chopper

[chŏpər]
  1. A crudely flaked, unifacial core tool, especially one associated with the Oldowan stone culture of the early Paleolithic Period.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.