Pronunciation: (kwo-drup'lit, -drOO'plit, kwod'roo-plit), [key]
1. any group or combination of four.
2. quadruplets,four children or offspring born of one pregnancy.
3. one of four such children or offspring.
4. Music.a group of four notes of equal value performed in the time normally taken for three.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.