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loco

[ loh-koh ]
/ ˈloʊ koʊ /
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noun, plural lo·cos.
Slang. an insane person; maniac.
Veterinary Pathology. locoism.
verb (used with object), lo·coed, lo·co·ing.
to poison with locoweed.
Slang. to cause to be insane or crazy.
adjective
Slang. out of one's mind; insane; crazy.
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Origin of loco

1835–45, Americanism;<Spanish: insane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use loco in a sentence

British Dictionary definitions for loco (1 of 3)

loco1
/ (ˈləʊkəʊ) /

noun
informal short for locomotive

British Dictionary definitions for loco (2 of 3)

loco2
/ (ˈləʊkəʊ) /

adjective
slang, mainly US insane
(of an animal) affected with loco disease
noun plural -cos
short for locoweed
verb (tr)
to poison with locoweed
US slang to make insane

Word Origin for loco

C19: via Mexican Spanish from Spanish: crazy

British Dictionary definitions for loco (3 of 3)

loco3
/ (ˈləʊkəʊ) /

adjective
denoting a price for goods, esp goods to be exported, that are in a place specified or known, the buyer being responsible for all transport charges from that placeloco Bristol; a loco price

Word Origin for loco

C20: from Latin locō from a place
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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