cha.shash denotes chaff-like material in images of fire, burning, and transience.

The two attestations use the noun in imagery of chaff-like material: Isaiah 33:11 places it in a conception-and-birth figure, while Isaiah 5:24 sets it beside stubble, dry grass, fire, decay, and dust.

1. Chaff-like material in images of destruction · dominant

   In Isaiah 33:11, the singular absolute noun occurs in the clause the APB renders “You will conceive chaff,” followed by stubble and devouring fire. In Isaiah 5:24, the same form occurs within an image of fire consuming stubble and dry grass, followed by root decay and blossom becoming dust.

   Isaiah 33:11Isaiah 5:24

In the Anselm Project Bible: The APB explicitly uses “chaff” in Isaiah 33:11. In Isaiah 5:24, its wording foregrounds stubble, dry grass, flame, decay, and dust; The lemma's specific English counterpart there is not isolated.