جوّب

2.
Also, said of the light of the moon, (assumed tropical:) It illumined, and rendered clear, [by penetrating,] a dark night. (TA.)
3.
جوّب عَلَيْهِ [from جَوْبٌ “ a shield ”] He shielded him. (TA: so according to an explanation of the act. particle n.)

Perseus ID: n6614