six-a-side football
noun [ U ] UK uk/ˌsɪks.ə.saɪd ˈfʊt.bɔːl/ us/ˌsɪks.ə.saɪd ˈfʊt.bɑːl/ (also arena football); (US indoor soccer)
六人制足球
football played by two teams of six players, not the usual eleven players. The playing area is surrounded by a wall, not lines, and the game does not stop for throw-ins, corners, or goal kicks.