A union is a group of two or more people who have come together or people have joined for the purposes of collective bargaining in a labor situation. (noun)
An example of a union is marriage.
An example of a union is a group of auto workers who have come together to negotiate the terms of their work as a group.
a device for joining together parts, as of a machine; esp., a coupling for linking the ends of pipes
a fabric made of two or more different kinds of material, as cotton and linen
Math. the set containing all the elements of two or more given sets, and no other elements
See union in American Heritage Dictionary 4
(yo͞onˈyən)
noun
a. The act of uniting or the state of being united.
b. A combination so formed, especially an alliance or confederation of people, parties, or political entities for mutual interest or benefit.
Mathematics A set, every member of which is an element of one or another of two or more given sets.
Agreement or harmony resulting from the uniting of individuals; concord.
a. The state of matrimony; marriage: “The element that was to make possible such a union was trust in each other's love”(Kate Chopin).
b. Sexual intercourse.
a. A combination of parishes for joint administration of relief for the poor in Great Britain.
b. A workhouse maintained by such a union.
A labor union.
A coupling device for connecting parts, such as pipes or rods.
A device on a flag or ensign, occupying the upper inner corner or the entire field, that signifies the union of two or more sovereignties.
often Union
a. An organization at a college or university that provides facilities for recreation; a student union.
b. A building housing such facilities.
Union The United States of America regarded as a national unit, especially during the Civil War.
adjective
Union Of, relating to, or loyal to the United States of America during the Civil War: a Union soldier.
Of or relating to a labor union or labor union organizing: the union movement; union negotiations.
A community of northeast New Jersey west-northwest of Elizabeth. Settled c. 1749 by colonists from Connecticut, it is a manufacturing center. Population: 55,000.