| 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. |
quadruplet quad·ru·plet (kwŏ-drŭp'lĭt, -dr&oomacr;'plĭt, kwŏd'rə-plĭt)
n.
One of four offspring born in a single birth.
A group or combination of four associated by common properties or behavior.