puresso describes a woman being ill with fever in the accounts of Peter's mother-in-law.

The attested use describes Peter's mother-in-law as feverish: the present active participle identifies her condition in both accounts.

1. Being ill with fever · dominant

   In Mark 1:30, πυρέσσουσα is a present active nominative singular feminine participle describing Simon's mother-in-law as she lies down; the APB renders her condition "feverish." In Matthew 8:14, πυρέσσουσαν is the corresponding present active accusative singular feminine form in the description of Peter's mother-in-law; the APB again renders her "feverish."

   Mark 1:30Matthew 8:14

In the Anselm Project Bible: Across Mark 1:30 and Matthew 8:14, the APB presents the woman's condition as "feverish." This rendering is confirmation from the clause rather than a lexical equation.