Extended Strong's Greek Lexicon (Abbott-Smith based)
to gnash
Usage: βρύχω (Attic, βρύκω), [in LXX: Job.16:10(9), Psa.34 (35):16 36 (37):12 111 (112):10, La 2:16 (חרק)* ;] __1. to bite or eat greedily. __2. to gnash, grind, with the teeth: Act.7:54. † (AS)