Seven Sisters. [See also SISTER n.]
1. The Pleiades. Obs.
Obsolete? I've always called the Pleiades the Seven Sisters (largely because I keep forgetting how to spell 'Pleiades'). Wikipedia lists the epithet, so it can't be completely out of use.
The Pleiades are a small cluster of stars by Taurus. Starting from Orion, follow the line made by the three stars of the belt on the upwards diagonal. You should come to a reddish star (Aldebaran), which marks the upper-left corner of a V-shaped constellation (Taurus). Just to the right of the V are the Pleiades.
What does everyone else call them? < edit > And where were you raised? < /edit >
In Japanese, they're known as Subaru, and the car emblem depicts the star cluster.