adj. & n. --adj. sl. crazy. --n. (pl. -oes or -os) (in full loco-weed) a poisonous leguminous plant of the US causing brain disease in cattle eating it. [Sp., = insane]
LOCO
Meaning of LOCO in English
English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012