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English definition of “union”

union

noun [C/U]  /ˈjun·jən/ us  

union noun [C/U] (THINGS JOINED)

the act or the state of being joined together The union of two people refers to marriage.

union noun [C/U] (POLITICAL UNIT)

social studies a political unit made up of two or more separate units such as states the Union US history In the American Civil War, the Union refers to the states that did not separate from the United States.

union noun [C/U] (ORGANIZATION)

social studies [C] a labor union
(Definition of union from the Cambridge Academic Content Dictionary © Cambridge University Press)
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