Main definitions of loco in English

: loco1loco2

loco1

Pronunciation /ˈlōkō/ /ˈloʊkoʊ/

Translate loco into Spanish

nounlocos

informal British
  • A locomotive.

    • ‘Britain's most famous steam loco’
    • ‘loco sheds’

Origin

Mid 19th century abbreviation.

Main definitions of loco in English

: loco1loco2

loco2

Pronunciation /ˈlōkō/ /ˈloʊkoʊ/

Translate loco into Spanish

adjective

informal
  • Crazy.

    • ‘Along with five equally loco Norwegians and a parrot, he survives on fish that literally hurl themselves on deck, meets up with a few sharks, and endures a beaching in Tahiti.’
    • ‘If true, this would not only be one of the most loco funding stories, but it gives more credence to the idea of a poker bubble, in which everyone and their mother is either playing poker or launching some kind of poker venture.’
    • ‘On the couch one evening, our loco analysand is seized by an uncontrollable passion for the ancient medico.’
    • ‘A haywire fembot goes loco at a square-dance; another gets post-coital mammary enlargement via remote control.’
    • ‘It proves that too much sun makes you loco - but in the nicest way.’
    severely mentally ill, mentally ill, insane, mad, certifiable, deranged, demented, of unsound mind, out of one's mind, not in one's right mind, not together, crazed, maniac, maniacal, lunatic, unbalanced, unhinged, unstable, disturbed, distracted, stark mad, manic, frenzied, raving, distraught, frantic, hysterical, delirious, mad as a hatter, mad as a March hare

Origin

Late 19th century from Spanish, ‘insane’.