Among the Polynesians and other races of the South Pacific, separated or set apart either as forbidden or as sacred; placed under ban or prohibition; consecrated either to exclusion or avoidance or to special use, regard, or service; hence, in English use, forbidden; interdicted.n. Among the Polynesians and other races of the South Pacific, a system, practice, or act whereby persons, things, places, actions, or words are or may be placed under a ban, curse, or prohibition, or set apart as sacred or privileged in some specific manner, usually with very severe penalties for infraction.n. Hence A prohibitory or restraining injunction or demonstration; restraint or exclusion, as from social intercourse or from use, imposed by some controlling influence; ban; prohibition; ostracism: as, to put a person or a thing under taboo. See the verb.To put under taboo; disallow, or forbid the use of; interdict approach to, or contact or intercourse with; hence, to ban, exclude, or ostracize by personal authority or social influence: as, to taboo the use of tobacco; a tabooed person or subject (one not to be mentioned or discussed).