ti.ach denotes the material spread over a wall, questioned after the wall falls.

The attested use names the material applied over a wall, brought into view when the fallen wall prompts a question about what had been spread over it.

1. Material spread over a wall · dominant

   In Ezekiel 13:12, the masculine singular absolute noun occurs in the question raised after a wall has fallen; the APB renders the clause, "Where is the coating with which you overspread it?"

   Ezekiel 13:12

In the Anselm Project Bible: In Ezekiel 13:12, the APB presents the material as "the coating with which you overspread it,".