ball
noun
1.
round object that is hit or thrown or kicked in games
2.
a solid projectile that is shot by a musket
4.
5.
a spherical object used as a plaything
7.
a lavish dance requiring formal attire
8.
9.
a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs
10.
a pitch that is not in the strike zone