Found 2 items, similar to LOCO.
English → English (WordNet) Definition: loco loco adj : informal or slang terms for mentally irregular; “it used to drive my husband balmy” [syn: balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loony, loopy, nuts, nutty, round the bend, around the bend , wacky, whacky]
English → English (gcide) Definition: loco loco \lo"co\, a. [Sp. loco insane.] Insane; crazy. [Originally Southwestern U. S., now slang] [PJC]