English

Noun

Seven Sisters pl ‎(plural only)

1. (astronomy) The Pleiades.
2. (business) A cartel of seven oil companies that dominated the global petroleum industry from the mid-1940s to the 1970s.
3. (education) A group of seven liberal arts colleges in the northeastern United States.

See also

• Pleiades (Greek mythology) on Wikipedia.Wikipedia
• Seven Sisters (oil companies) on Wikipedia.Wikipedia
• Seven Sisters (colleges) on Wikipedia.Wikipedia