union

Sense 1 noun

an organization of employees formed to bargain with the employer

you have to join the union in order to get a job

Sense 2 adjective

of trade unions

the union movement

Sense 3 noun

the act of pairing a male and female for reproductive purposes

the casual couplings of adolescents

Sense 4 noun

the state of being joined or united or linked

there is strength in union

Sense 5 noun

the state of being a married couple voluntarily joined for life (or until divorce)

a long and happy marriage

Sense 6 noun

healing process involving the growing together of the edges of a wound or the growing together of broken bones

Sense 7 noun

a political unit formed from previously independent people or organizations

the Soviet Union

Sense 8 noun

a set containing all and only the members of two or more given sets

let C be the union of the sets A and B

Sense 9 noun

the occurrence of a uniting of separate parts

lightning produced an unusual union of the metals

Sense 10 noun

a device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner)

Sense 11 noun

the act of making or becoming a single unit

the union of opposing factions