boycott
Concise Oxford English Dictionary © 2008 Oxford University Press:
boycott/ˈbɔɪkɒt/
▶verb withdraw from commercial or social relations with (someone) as a punishment or protest.
■ refuse to buy or handle (goods) for this reason.
▶noun an act of boycotting.– origin from the name of Captain Charles C. Boycott, an Irish land agent so treated in 1880 in an attempt to get rents reduced.
'boycott' also found in these Oxford entries:

