Definitions
1.nounThe act of uniting or joining two or more things into one.
2.nounThe state of being united or joined; a state of unity or harmony.
3.nounThat which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.
4.nounA trade union; a workers' union.
5.nounAn association of students at a university for social and/or political purposes; also in some cases a debating body.
6.nounA joint or other connection uniting parts of machinery, such as pipes.
7.nounThe set containing all of the elements of two or more sets.
8.nounThe act or state of marriage.
9.nounSexual intercourse.
10.nounA data structure that can store any of various types of item, but only one at a time.
11.nounA large, high-quality pearl.
12.nounAn affiliation of several parishes for joint support and management of their poor; also the jointly-owned workhouse.
13.verbTo combine sets using the union operation.