gnasher

plural gnashers

1. One who gnashes the teeth.
2. colloquialA tooth.

   Teeth for the ladies; teeth for the gentlemen — at upwards of two pound ten a gnasher"

   1993, Alethea Helbig with Agnes Perkins, Children's Literature Association, The Phoenix Award of the Children's Literature Association, 1985-1989, page 85

   1 more example

   COUNTRY park ranger Bob Thurston could hardly believe his luck when he casually asked bosses at the gravel quarry next door whether any interesting old

   1999 June 19, “Holy molar's, look at this gnasher!; MAMMOTH TOOTH DISCOVERED”, in Coventry Evening Telegraph