boo

1 [boo] interjection, noun, plural boos, verb, booed, boo·ing.
interjection
1.
(used to express contempt or disapprobation or to startle or frighten).
noun
2.
an exclamation of contempt or disapproval: a loud boo from the bleachers.
verb (used without object)
3.
to cry boo in derision.
verb (used with object)
4.
to show disapproval of by booing.

Origin:
1810–20; expressive formation

Dictionary.com Unabridged

boo

2 [boo, boh]
noun
Slang. marijuana.
Also called boo grass.


Origin:
1955–60; of uncertain origin

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To boo
00:10
Boo is one of our favorite verbs.
So is hornswoggle. Does it mean:
to swindle, cheat, hoodwink, or hoax.
to run away hurriedly; flee.
Collins
World English Dictionary
boo (buː) [Click for IPA pronunciation guide]
 
interj
1.  an exclamation uttered to startle or surprise someone, esp a child
2.  a shout uttered to express disgust, dissatisfaction, or contempt, esp at a theatrical production, political meeting, etc
3.  would not say boo to a goose is extremely timid or diffident
 
vb , boos, booing, booed
4.  to shout "boo" at (someone or something), esp as an expression of disgust, dissatisfaction, or disapproval: to boo the actors

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

boo
"to startle," early 15c., boh, "A combination of consonant and vowel especially fitted to produce a loud and startling sound" [OED, which compares L. boare, Gk. boaein "to cry aloud, roar, shout."]; as an expression of disapproval, 1801 (n.), 1816 (v.); hence, the verb meaning "shower someone with boos"
(1893). To say boo "open one's mouth, speak," originally was to say boo to a goose.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
BOO
Bootes (constellation)
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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Example sentences
Oh, look, two years in a row with trillion dollar deficits and boo to show for it.
They can do whatever they please, and no other nation can say boo because they hold such a large percentage of the world's oil.
We cheer on the good guy and boo when the bad guy gets a leg up.
Boo to the lazy editor who came up with the lame label.
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