What is "polycaste"

Polycaste is the name of several different women in Greek mythology:

• Polycaste is the daughter of Nestor and Eurydice (or Anaxibia). She bathed Telemachus on his way to Pylos and later married him. They had a son, Persepolis.
• Polycaste, a daughter of Lygaeus. She was married to Icarius, by whom she became the mother of Penelope, Alyzeus and Leucadius.
• Polycaste, is the sister of Daedalus and the mother of Perdix. Because her brother killed her son, she laughed with joy when she saw Icarus (Daedalus' own son) fall into the sea and drown because he had flown too close to the sun.