The definition of taboo is something prohibited, forbidden or restricted.(adjective)
An example of taboo is alcohol which is drunk while pregnant.
A taboo is defined as a restriction or something not allowed by a culture.(noun)
An example of a taboo in some cultures is a man marrying a woman of another race.
See taboo in Webster's New World College Dictionary
noun pl. taboos
Origin: < a Polynesian language: cf. Tongan, Samoan, Maori, etc. tapu
See taboo in American Heritage Dictionary 4
also ta·bunoun pl. ta·boos also ta·bus
Origin: Tongan tabu, under prohibition. Word History: Among the many discoveries of Captain James Cook was a linguistic one, the term taboo. In a journal entry from 1777, Cook says this word “has a very comprehensive meaning; but, in general, signifies that a thing is forbidden᠁ When any thing is forbidden to be eat, or made use of, they say, that it is taboo.” Cook was in the Friendly Islands (now Tonga) at the time, so even though similar words occur in other Polynesian languages, the form taboo from Tongan tabu is the one we have borrowed. The Tongans used tabu as an adjective. Cook, besides borrowing the word into English, also made it into a noun referring to the prohibition itself and a verb meaning “to make someone or something taboo.” From its origins in Polynesia the word taboo has traveled as widely as Cook himself and is now used throughout the English-speaking world.
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