Number One — synonyms, definition

1. number one (Noun)

first number 1

number one (Noun) — A reference to yourself or myself etc.; 'take care of number one' means to put your own interests first.

number one (Noun) — The first or highest in an ordering or series. ex. "He wanted to be the number one"

number one (Noun) — The first element in a countable series.

no. ordinal ordinal number rank self former