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number one

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number one

  (informal)

the most important person, especially when you think this is yourself and you do not care about anyone else Half of me thinks I should just look out for number one and not give a damn about anyone else.

See also: number, one

number one

1. mod. top rate; best. (see also numero uno.) We heard the number one high school band in the whole state last night.

2. n. oneself. I don’t know who will pay for the broken window, but old number one isn’t!

3. n. urination; an act of urination. Jimmy made a mess in his pants. But don’t worry. It’s just number one.

See also: number, one