noun
: a policy agreed to by an employer to hire qualified union members if they are available with the understanding that nonunion workers may be hired without being required to join the union when the union cannot supply men
noun
: a policy agreed to by an employer to hire qualified union members if they are available with the understanding that nonunion workers may be hired without being required to join the union when the union cannot supply men
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012