I. ˈlō(ˌ)kō noun
( -s )
Usage: often capitalized
Etymology: by shortening
: locofoco 2
II. noun
( plural locoes or locos )
Etymology: Mexican Spanish, from Spanish, adjective, crazy
1. : locoweed
2. or loco disease : locoism
3.
a. : an animal affected by locoism
b. : a mentally disordered person
III. transitive verb
( -ed/-ing/-s )
1. : to poison with locoweed
2. : to make or cause to be frenzied or crazy
IV. adjective
Etymology: Spanish
slang : out of one's mind : frenzied
went loco with rage
: crazy
a loco idea
V. adverb (or adjective)
Etymology: Italian ( al ) loco, literally, at the passage
: in the register as written — used as a direction in music; compare ottava
VI. noun
( -s )
Etymology: by shortening
: locomotive