loco

[ loh-koh ]
/ ˈloʊ koʊ /

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.

Origin of loco

1835–45, Americanism; < Spanish: insane

Definition for loco (2 of 7)

in loco
[ in loh-koh ]
/ ɪn ˈloʊ koʊ /

adverb Latin.

in place; in the proper place.

Origin of in loco

First recorded in 1700–10

Definition for loco (3 of 7)

in loco parentis
[ in loh-koh pah-ren-tees; English in loh-koh puh-ren-tis ]
/ ɪn ˈloʊ koʊ pɑˈrɛn tis; English ɪn ˈloʊ koʊ pəˈrɛn tɪs /

adverb Latin.

in the place or role of a parent.

Definition for loco (4 of 7)

loco citato
[ loh-koh ki-tah-toh; English loh-koh sahy-tey-toh, si-tah-toh ]
/ ˈloʊ koʊ kɪˈtɑ toʊ; English ˈloʊ koʊ saɪˈteɪ toʊ, sɪˈtɑ toʊ /

adverb Latin.

Definition for loco (5 of 7)

loco primo citato
[ loh-koh pree-moh ki-tah-toh; English loh-koh prahy-moh sahy-tey-toh, pree-moh si-tah-toh ]
/ ˈloʊ koʊ ˈpri moʊ kɪˈtɑ toʊ; English ˈloʊ koʊ ˈpraɪ moʊ saɪˈteɪ toʊ, ˈpri moʊ sɪˈtɑ toʊ /

adverb Latin.

Definition for loco (6 of 7)

loco supra citato
[ loh-koh soo-prah ki-tah-toh; English loh-koh soo-pruh sahy-tey-toh, si-tah-toh ]
/ ˈloʊ koʊ ˈsu prɑ kɪˈtɑ toʊ; English ˈloʊ koʊ ˈsu prə saɪˈteɪ toʊ, sɪˈtɑ toʊ /

adverb Latin.

Definition for loco (7 of 7)

suo loco
[ soo-oh law-koh; English soo-oh loh-koh ]
/ ˈsʊ oʊ ˈlɔ koʊ; English ˈsu oʊ ˈloʊ koʊ /

adverb Latin.

in one's own or rightful place.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for loco

British Dictionary definitions for loco (1 of 6)

loco1
/ (ˈləʊkəʊ) /

noun

informal short for locomotive

British Dictionary definitions for loco (2 of 6)

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 6)

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

British Dictionary definitions for loco (4 of 6)

in loco parentis
/ Latin (ɪn ˈləʊkəʊ pəˈrɛntɪs) /

in place of a parent: said of a person acting in a parental capacity

British Dictionary definitions for loco (5 of 6)

loco citato
/ (ˈlɒkəʊ sɪˈtɑːtəʊ) /

in the place or passage quotedAbbreviation: loc. cit, lc

Word Origin for loco citato

Latin: in the place cited

British Dictionary definitions for loco (6 of 6)

suo loco
/ (ˈsuːəʊ ˈlɒkəʊ) /

adverb

mainly law in a person or thing's own or rightful place

Word Origin for suo loco

Latin
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

Culture definitions for loco

in loco parentis
[ (in loh-koh puh-ren-tis) ]

To assume the duties and responsibilities of a parent: “Because Jack's parents were out of town, his sister acted in loco parentis and punished him for staying out so late.” From Latin, meaning “in the place of a parent.”

notes for in loco parentis

At one time, colleges and universities acted in loco parentis for their students, but this is no longer true.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.