Bible Greek and Hebrew Dictionaries combined for Word Studies
Genesis Chapter 1
gnash 1031 # brucho {broo'-kho}; a primary verb; to grate the teeth (in pain or rage): -- {gnash}.
teeth 3679 # oneidizo {on-i-did'-zo}; from 3681; to defame, i.e. rail at, chide, taunt: -- cast in {teeth}, (suffer) reproach, revile, upbraid.