lo|co

lo|co¹ «LOH koh», adjective, noun, plural -cos, verb, -coed, -co|ing. U.S.

–adj.

Slang. crazy.

–n.

1. locoweed.

2. a disease caused by eating this weed; loco disease.

–v.t.

1. to poison with locoweed.

2. Slang. to make insane.

╂[American English < Spanish loco insane; locoweed, perhaps < Italian locco fool < alocco owl < Latin ulucus < ululāre howl]

lo|co² «LOH koh», noun, adjective. British Informal.

–n.

a locomotive.

–adj.

of or having to do with locomotives: »

loco engineering.