A Quick and Simple Dictionary

Union

1. Noun.  (context, with determiner) The United States of America.
2. Noun.  (context, with determiner) Those of the United States that did not secede at the time of the Civil War.
3. Noun.  The 0-10-2 train configuration. Derived from the name of the only U.S. company to use that configuration.
4. Noun.  The act of uniting or joining two or more things into one, or the state of being united or joined; junction; coalition; combination.
5. Noun.  That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.
6. Noun.  A joint or other connection uniting parts of machinery, such as pipes.
7. Noun.  (set theory) The set containing all of the elements of two or more sets.
8. Noun.  The act or state of marriage.
9. Noun.  Sexual intercourse.
10. Noun.  (computing) A data structure that can store any of various items, but only one at a time.
11. Noun.  (context, now) A large, high-quality pearl.