τρισέληνος

A. of three moons or nights, epith. of Heracles (cf. τριέσπερος), AP 9.441 (Pall.), Nonn. D. 7.126; νύξ APl. 4.102.

2. πλάτος τ. of three moons in breadth, of the earth's shadow, Plu. 2.923b.