ma.rach denotes applying a fig cake by rubbing it onto a boil in Isaiah 38:21.

The attested use describes applying a cake of figs to a boil by rubbing it on in Isaiah 38:21.

1. Applying a fig cake to a boil · dominant

   In Isaiah 38:21, the Qal imperfect third masculine plural form occurs in the instruction concerning a cake of figs and a boil; the APB renders the action, “rub it upon the boil,” followed by the expectation that he will live.

   Isaiah 38:21

In the Anselm Project Bible: In Isaiah 38:21, the APB presents the action as “rub it upon the boil.” This rendering confirms the clause's action without isolating every element of the Hebrew.