con-fervĕo

ēre
I. v. n., to seethe, boil together (very rare).
I. In gen., Pall. 1, 35, 13.—
II. In medic. lang., of broken limbs, to heal, grow together, Cels. 8, 10, 1 al.
Lewis & Short
A Latin Dictionary, 1879
An open-access project