1 a : to set up an administrative structure for
b : to persuade to associate in an organization (as a union)
2 : to arrange by systematic planning and united effort [ a strike]
: to form an organization
: to form or persuade workers to join a union
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.