Boycott, collective and organized ostracism applied in labour, economic, political, or social relations to protest practices that are regarded as unfair . The boycott was popularized by Charles Stewart Parnell during the Irish land agitation of 1880 to protest high rents and land evictions. boycott meaning , definition, what is boycott : to refuse to buy something, use somethin...: Learn more. If a country, group, or person boycotts a country, organization, or activity, they refuse to be involved with it in any way because they disapprove of it. The main opposition parties are boycotting the elections. [VERB noun] Boycott is also a noun. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers. A boycott is a deliberate refusal to use, buy, or participate in something as a form of protest or to force change. It is often used to oppose unfair practices or policies.