Wiktionary
multiple star system
n. (context star English) A stellar system that has multiple stars orbiting around each other; multiple star
Usage examples of "multiple star system".
It was the forty-third multiple star system the Seraphim had visited since leaving home.
We've got an enormous Oort Cloud of our owntremendously complicated by the gravitational vagaries of a multiple star system, of coursebut we've been slow to exploit it.