boycott

Short definition from Wiktionary

Verb

1. 1
   To abstain, either as an individual or a group, from using, buying, or dealing with someone or some organization as an expression of protest.

Noun

1. 1
   The act of boycotting.

Proper noun

1. 1
   A hamlet in Stowe parish, Buckinghamshire, England (OS grid ref SP6636).
2. 2
   A surname.