number one - Dictionary definition and pronunciation - Yahoo! Education

Definition of number one

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number one

NOUN:
  1. One that is first in rank, order, or importance.
  2. Slang One's own interests; oneself: watching out for number one.
  3. Informal
    1. The act of urinating.
    2. Urine.
ADJECTIVE:
  1. First in rank, order, or importance: the number one team in the nation; our number one problem.
  2. Foremost in quality; first-rate: bought some number one farmland.



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