Receptacle

Receptacle was the name for the ball in Manac-Nebut's sport.

Behind the scenes
Receptacle was mentioned in a segment called "Prospects", written by Bob Carrau for the 1993 book Monsters and Aliens from George Lucas, a publication that collects concept designs and photographs from various George Lucas projects. Lucasfilm employee Leland Chee, who maintains the Holocron continuity database, has indicated that information contained in the book is non-canonical.