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lightweight

[lahyt-weyt] /ˈlaɪtˌweɪt/
adjective
1.
2.
being lighter in weight, texture, etc., than another item or object of identical use, quality, or function:
a lightweight topcoat; a lightweight alloy for ship construction.
3.
without seriousness of purpose; trivial or trifling:
lightweight reading.
4.
of or relating to a lightweight:
He's the new lightweight contender.
5.
(of a horse, especially a hunter) able to carry up to 165 pounds (75 kg).
noun
6.
a person of less than average weight.
7.
Informal. a person who is of little influence, importance, or effect.
8.
a boxer or other contestant intermediate in weight between a featherweight and a welterweight, especially a professional boxer weighing between 126 and 135 pounds (56.7–61 kg).
Origin
1765-1775
1765-75; light2 + weight
Related forms
ultralightweight, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ultralightweight

lightweight

/ˈlaɪtˌweɪt/
adjective
1.
of a relatively light weight
2.
not serious; trivial
noun
3.
a person or animal of a relatively light weight
4.
  1. a professional boxer weighing 130–135 pounds (59–61 kg)
  2. an amateur boxer weighing 57–60 kg (126–132 pounds)
  3. (as modifier): the lightweight contender
5.
a wrestler in a similar weight category (usually 115–126 pounds (52–57 kg))
6.
(informal) a person of little importance or influence
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 ultralightweight

lightweight

adj.

also light-weight, 1773 in horse-racing, also in pugilism; from light (adj.1) + weight. Figurative sense of "inconsequential" first attested 1809.

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

lightweight

adjective

Inconsequential; unserious (1809+)

noun

: He seems like a lightweight to me, don't pay him any attention (1882+)


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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