1

loco

play
adverb or adjective lo·co \ˈlō-(ˌ)kō\

Definition of loco

  1. :  in the register as written —used as a direction in music

Origin and Etymology of loco

Italian dialect, there, from Latin in loco in the place


2

loco

noun lo·co

Definition of loco

plural

locos

or

locoes

  1. 1 :  locoweed

  2. 2 :  locoism

Recent Examples of loco from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'loco'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of loco

Mexican Spanish, from Spanish, crazy


3

loco

verb lo·co

Definition of loco

  1. transitive verb
  2. 1 :  to poison with locoweed

  3. 2 :  to make frenzied or crazy

Examples of loco in a Sentence

  1. years of living alone had clearly locoed the old rancher

First Known Use of loco

1884


4

loco

adjective lo·co

Definition of loco

slang

  1. :  mentally disordered :  crazy, frenzied

Examples of loco in a Sentence

  1. The crowd went loco when she walked out on the stage.

  2. He's not just weird, he's positively loco.

Origin and Etymology of loco

Spanish


Medical Dictionary

1

loco

play
noun lo·co \ˈlō-(ˌ)kō\

Medical Definition of loco

plural

locos

or

locoes

  1. 1:  locoweed

  2. 2:  locoism


2

loco

transitive verb lo·co

Medical Definition of loco

  1. :  to poison with locoweed


Learn More about loco


Seen and Heard

What made you want to look up loco? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to bring about or cause (something)

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!