Grind the teeth together (5)
I believe the answer is:
gnash
(Other definitions for gnash that I've seen before include "Strike one's teeth together in rage" , "champ" , "grinding action" , "Hangs (anag.)" , "grate" .)
I believe the answer is:
gnash
(Other definitions for gnash that I've seen before include "Strike one's teeth together in rage" , "champ" , "grinding action" , "Hangs (anag.)" , "grate" .)