Tooth

one of the particulars regarding which retaliatory punishment
was to be inflicted (Ex. 21:24; Lev. 24:20; Deut. 19:21).
"Gnashing of teeth" =rage, despair (Matt. 8:12; Acts 7:54);
"cleanness of teeth" =famine (Amos 4:6); "children's teeth set
on edge" =children suffering for the sins of their fathers
(Ezek. 18:2).