Πλειάδες

Etymology
Apparently from because of the star cluster’s importance in delimiting the sailing season in the Mediterranean Sea: "the season of navigation began with their heliacal rising". The mythological sisters were probably named after the star cluster, rather than vice versa.

The singular is sometimes found referring to the star cluster.

Proper noun

 * 1)  Pleiades
 * 2)  Pleiades

Etymology
, possibly from, or possibly from a plural of.

Proper noun

 * 1)  Pleiades
 * 2)  Pleiades