1. [slang] Insane, strange, eccentric or stupid
   "it used to drive my husband loco";
   - balmy [archaic, slang], barmy [slang], bats [slang], batty [slang], bonkers [slang], buggy [N. Amer, slang], cracked [slang], crackers [slang], daft [Brit, slang], dotty [Brit, slang], fruity [slang], haywire [slang], kooky [slang], kookie [slang], loony [slang], loopy [slang], nuts [slang], nutty [slang], round the bend [slang], around the bend [slang], wacky [slang], whacky [slang], daffy [slang], dippy [slang], doolally [Brit, slang], wacko [slang], daft as a brush [Brit, slang], potty [Brit, slang], round the twist [Brit, slang], dumbass [N. Amer, slang], nutsy [N. Amer, slang], barking mad [Brit, slang], mental [slang], barking [Brit, slang], bughouse [N. Amer, slang], cuckoo [slang]
    
2. Of or relating to locomotion
   "The loco systems of different animals vary widely";
   - locomotive, locomotor

1. A wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
   "The diesel loco hauled the freight cars across the country";
   - locomotive, engine, locomotive engine, railway locomotive [Brit, Cdn], railroad locomotive [N. Amer]

Derived forms: locos

See also: insane

Type of: self-propelled vehicle

Part of: railroad train [N. Amer], railway train [Brit, Cdn], train

Encyclopedia: Loco, Oklahoma