cha.tsats denotes gravel, shown as something that grinds teeth or fills the mouth.

The attested use identifies gravel as a harsh material associated with teeth and the mouth: Lamentations 3:16 describes teeth being ground with it, and Proverbs 20:17 places it in a mouth after deceptive food. Psalm 77:18 has a plural construct form, though the translation does not make its specific contribution identifiable.

1. Gravel in harsh mouth-and-teeth imagery · dominant

   In Lamentations 3:16, the singular absolute form occurs in the clause that the APB renders, “He ground my teeth with gravel.” In Proverbs 20:17, the same singular absolute form stands in the clause rendered, “afterward his mouth is filled with gravel”; Psalm 77:18 has a plural construct form, but the APB's thunder-and-lightning wording does not isolate its contribution.

   Lamentations 3:16Proverbs 20:17Psalm 77:18

In the Anselm Project Bible: The APB explicitly uses “gravel” in Lamentations 3:16 and Proverbs 20:17. In Psalm 77:18, its translation does not supply an identifiable English correspondence for the plural construct form.