loco

adjective

1. crazy, insane, mad, nuts (asserting that something is out of place in the head)
2. rash, risky, imprudent
3. tremendous, terrific, huge, enormous
4. malfunctioning, broken and working incorrectly (said of a machine)
5. overgrown, rambling
6. loose (pipe fittings, pulley)
7. colloquial sexy (only with ser)

noun, masculine

1. derogatory a crazy person; a madman
2. Caribbean, Central America, South America, Spain dude, guy
3. a highly affected homosexual; fruit
4. a plant in the genus Astragalus or Oxytropis

noun, masculine

1. Chile Chilean edible gastropod mollusk that resembles abalone but is, in fact, a muricid (Concholepas concholepas)