PLEIADES, in Astronomy, an assemblage of seven stars, in the neck of the constellation Taurus.

These stars are so called from the Greek \pi\lambda\epsilon\kappa\tau\rho\omega, to sail; as being terrible to mariners, by reason of the rains and storms which frequently rise with them. The Latins called them vergilis, from ver, spring; because of their rising about the time of the vernal equinox. The largest is of the third magnitude, and is called lucida Pleiadum.