'Gnawing' in the Bible

“At night it pierces my bones within me,And my gnawing pains take no rest.

What the gnawing locust has left, the swarming locust has eaten;And what the swarming locust has left, the creeping locust has eaten;And what the creeping locust has left, the stripping locust has eaten.

“Then I will make up to you for the yearsThat the swarming locust has eaten,The creeping locust, the stripping locust and the gnawing locust,My great army which I sent among you.