Heb. harak, meaning "to grate the teeth", ( Job 16:9 ; Psalms 112:10 ; Lamentations 2:16 ), denotes rage or sorrow. (See also Acts 7:54 ; Mark 9:18 .)

These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.