Definition of tusk noun from the Oxford Advanced Learner's Dictionary

 

tusk

 noun
noun
BrE BrE//tʌsk//
 
; NAmE NAmE//tʌsk//
 
 
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either of the long curved teeth that stick out of the mouth of elephants and some other animals see also ivory Word Origin Old English tux, variant of tusc.
See the Oxford Advanced American Dictionary entry: tusk