Noun Definition
number one
1.Definition: a reference to yourself or myself etc.; `take care of number one' means to put your own interests first
Category: People2.Definition: the first element in a countable series
"The first of the month"
Related Noun(s):first
Category: General3.Definition: the first or highest in an ordering or series
"He wanted to be the first"
Related Noun(s):first
Category: General