muchacho

American  

[moo-chah-choh] / muˈtʃɑ tʃoʊ /

noun

1. Informal, Southwestern U.S. a boy or young man (often used as a form of address).

   So what are you waiting for, muchacho?

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Etymology

Origin of muchacho

First recorded in 1590–1600; from Spanish, earlier mochacho, from moch(o) “cut off, cropped, clipped,” perhaps in reference to young people's haircuts ( mozzarella ( def. ) ) + -acho, an augmentative and pejorative suffix ( -aceous ( def. ) )