A group's refusal to have commercial dealings with some organization in protest against its policies.

(1940-)
English cricketer born in Yorkshire, England's most prolific run-maker with 8,114 runs in Test cricket until overtaken by David Gower in 1992. He was banned as a Test player in 1982 for taking part in matches against South Africa.
CAREER HIGHLIGHTS
all first-class matches
runs: 48,426
average: 56.83
best: 261 not out (MCC v. WIBC President's XI 1973–74)
Test cricket
runs: 8,114
average: 47.72
best: 246 not out (England v. India 1967)

(1832-1897)
English land agent in County Mayo, Ireland, who strongly opposed the demands for agrarian reform by the Irish Land League 1879–81, with the result that the peasants refused to work for him; hence the word boycott.

To refuse to sponsor; refuse to do business with.