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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
1880-85; buck1 + -o Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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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