tabu (Adjective) — Forbidden to profane use especially in South Pacific islands.
tabu (Adjective) — Excluded from use or mention. ex. "tabu fruit"
tabu (Noun) — A prejudice (especially in Polynesia and other South Pacific islands) that prohibits the use or mention of something because of its sacred nature.
tabu (Noun) — An inhibition or ban resulting from social custom or emotional aversion.