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[buhk-oh] /ˈbʌk oʊ/
noun, plural buckoes.
Chiefly Irish English. young fellow; chap; young companion.
British Slang. a swaggering fellow.
Origin of bucko
First recorded in 1880-85; buck1 + -o Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for bucko
Historical Examples
  • Did it seem to you as if I was a little too much of the bucko mate to the boy?

    The Portygee Joseph Crosby Lincoln
  • I'd not have sent for this bucko if Eileen didn't scare me by faintin'.

    The Straw Eugene O'Neill
  • Best place to talk is in the middle of a crowd, as old bucko Tom used to say.

    The Pirate Shark Elliott Whitney
  • The captain is a hard nut and the mates are both of the ‘bucko’ type.

    Boy Scouts in the North Sea

    G. Harvey Ralphson
  • Youll start right in now, my bucko, to learn what they were made for.

    Baseball Joe on the Giants Lester Chadwick
  • I may be a bucko, and I may be drunk to-night, but I know a man when I see one.


    George Allan England
  • I'll wait for ye, me bucko,' and I lay down in the corner and waited for him to come in.

    The Red Horizon Patrick MacGill
  • Well, my bucko, you remember what I said about getting even with you.

    Ted Strong's Motor Car Edward C. Taylor
  • The bucko didn't sabe English, maybe, but a forty-four gun is easy translated in any language.

    Plain Mary Smith Henry Wallace Phillips
  • I have since learned that Dido won her wandering Æneas in Manila, and that the captain finally has found his “bucko mate.”

British Dictionary definitions for bucko


noun (pl) -oes
(Irish) a lively young fellow: often a term of address
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 bucko

term of address, originally (1883) nautical and with a sense of "swaggering, domineering fellow." Probably from buck (n.1) in the slang sense of "a blood or choice spirit."

There are in London divers lodges or societies of Bucks, formed in imitation of the Free Masons: one was held at the Rose, in Monkwell-street, about the year 1705. The president is styled the Grand Buck. ["Dictionary of the Vulgar Tongue," 1811]

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



: The bucko skipper was a nasty sadist


  1. Fellow; friend; comrade; buddy; guy
  2. A mean and dangerous man: The mate aboard the Pride of Hoboken was a notorious bucko (1800s+ Merchant marine)
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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