septuplet

noun

1. any group or combination of seven.
2. one of seven offspring born at one birth.
3. septuplets, seven offspring born at one birth.
4. Music. a group of seven notes of equal value performed in the same amount of time normally taken to perform four or six.

noun

1. music a group of seven notes played in a time value of six, eight, etc
2. one of seven offspring produced at one birth
3. a group of seven things