Boycott

Webster's Dictionary of the English Language

·vt To combine against (a landlord, tradesman, employer, or other person), to withhold social or business relations from him, and to deter others from holding such relations; to subject to a boycott.

II. Boycott ·noun The process, fact, or pressure of boycotting; a combining to withhold or prevent dealing or social intercourse with a tradesman, employer, ·etc.; social and business interdiction for the purpose of coercion.