tuskPronunciation: /tʌsk/Translate tusk | into French | into German | into Italian | into Spanish Definition of tusk noun a long pointed tooth, especially one which protrudes from the closed mouth, as in the elephant, walrus, or wild boar. a long, tapering object or projection resembling a tusk: [as modifier]:a tusk tenon jointDerivatives tusked adjective tusky adjective ( literary)Origin: Old English tux, variant of tusc (see tush2)tusk in other Oxford dictionaries Definition of tusk in the US English dictionary