1 definition by M. De Witt

Top Definition
A genus of Old World monkeys of the subfamily Cercopithecinae.

However, it is also a term manufactured to be rascist by the Washington Post newspaper following an incident during the 2006 campaign when Sen. George Allen of Virginia twice referred to a political operative of Sen. Allen's opponent, Jim Webb, by the term. In actuality, the operative's name was S.R. Sidarth and is of Indian descent.
We'd like to welcome Macaca to our campaign rally. Thanks for being a good guy, Macaca.
by M. De Witt November 21, 2006

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