- union, 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"
--1 is a kind of organization, organisation
--1 is a part of labor movement, trade union movement, labor
--1 has particulars:industrial union, vertical union; craft union; company union; Industrial Workers of the World, IWW, I.W.W.