noun.
The cardinal number equal to 8 + 1.
noun.
The ninth in a set or sequence.
noun.
Something having nine parts, units, or members.
noun.
A playing card marked with nine pips.
noun.
A set of nine persons or things, especially.
noun.
The nine players on a side, or the whole team.
noun.
The nine Muses.
noun.
A size, as in clothing or shoes, designated as nine.
noun.
The first or second 9 holes of an 18-hole golf course.
idiom.
(to the nines) To the highest degree.