definition of
union

[1] #1 union n. [labor union, trade union, trades union, brotherhood] an organization of employees formed to bargain with the employer; "you have to join the union in order to get a job". wn

[2] #2 union n. [Union, North] the United States (especially the northern states during the American Civil War); "he has visited every state in the Union"; "Lee hoped to detach Maryland from the Union"; "the North's superior resources turned the scale". wn

[3] #3 union n. [coupling, mating, pairing, conjugation, sexual union] the act of pairing a male and female for reproductive purposes; "the casual couplings of adolescents"; "the mating of some species occurs only in the spring". wn

[4] #4 union a. of trade unions; "the union movement"; "union negotiations"; "a union-shop clause in the contract". wn

[5] #5 union n. [unification] the state of being joined or united or linked; "there is strength in union". wn