Meaning unknown. According to
Virgil's
Aeneid, this was the name of the son of the Trojan Hyrtacus (himself mentioned in the
Iliad, though Nisus is not). In the
Aeneid Nisus is the friend of
Euryalus. After Euryalus is captured by the Rutuli, both are slain when Nisus attempts to save him.
