plural of four-in-hand

(soccer) The set of four defenders in a team.

(China, politics) A leftist political faction composed of four Chinese Communist Party officials that came to prominence during the Chinese Cultural Revolution.

plural of four-door

Alternative form of Four Horsemen of the Apocalypse

(ice hockey, US, informal) The four regional champions of the NCAA Division I tournament, one of whom will become the national champion.

plural of four-wheeler

plural of four-acceleration

plural of four-vector

plural of four-momentum