Answer:

heptad

Answer	Crossword Clue
HEPTAD	Group of seven
HEPTAD	Water polo team, e.g.
HEPTAD	Rome's hills, for example

HEPTAD	Septet
HEPTAD	Septivalent.
HEPTAD	Group of seven.
HEPTAD	Quintet plus two
HEPTAD	Jazzy septet?
HEPTAD	The Seven Dwarfs, e.g.
HEPTAD	Snow White's Dwarfs, e.g.
HEPTAD	The seas, e.g.

HEPTAD	Disney's dwarfs, e.g.
HEPTAD	The "Harry Potter" books, e.g.
HEPTAD	Set of seven
HEPTAD	Series of seven
HEPTAD	Any group of seven

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.