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numero uno

[noo-muh-roh oo-noh, nyoo-] /ˈnu məˌroʊ ˈu noʊ, ˈnyu-/
number one (defs 1, 2).
number one (def 4, 5).
Origin of numero uno
Borrowed into English from Italian around 1970-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Numero Uno

noun phrase

  1. One's own self, esp as the object of one's best efforts; number one
  2. The chief; leader; boss, honcho: a clear understanding between the brothers about who is Numero Uno
  3. he most distinguished person ina field or endeavor: now an also-ran, but for many years Numero Uno

[1883+; fr Italian or Spanish]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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