basketball league(n = noun.group) - a league of basketball teams;
is a kind of conference, league

arab league, baseball league, basketball, basketball backboard, basketball clinic, basketball coach, basketball court, basketball equipment, basketball game, basketball hoop, basketball play, basketball player, basketball score, basketball season, basketball shot, basketball team, big league, bowling league, bush league, epworth league, football league, hanseatic league, hockey league, in league, iroquois league, ivy league, land league, league, league of iroquois, league of nations, league together, little league, major league, minor league, primrose league, professional basketball, war of the league of augsburg