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loco (adj.)
"mad, crazy," 1844, American English, from Spanish loco (adj.) "insane," of uncertain origin, perhaps from Arabic lauqa, fem. of 'alwaq "fool, crazy person." Loco-weed was the name given to species of western U.S. plants that cause cattle and horse diseases that make them stagger and act strangely. But the adjective seems to be the older word.
updated on August 11, 2016
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Dictionary entries near loco
lock-jaw
lockout
locksmith
lock-step
lock-up
loco
loco-
loco-foco
locomote
locomotion
locomotive