(soccer) A central defender, a player who plays in the centre of defence, just in front of the goalkeeper

(sports, billiards, snooker, pool) To cue the cue ball in such a way as to impart backspin. On impact, the ball will follow a reverse trajectory according to the spin.

(soccer) Collectively, the defenders of a team. / (field hockey) The line running across the goal to the corners of the playing field.

Used other than figuratively or idiomatically: see look, back. / (intransitive) To reconsider or regret.

Alternative form of look-back

(law) In U.S. patent law, a license under which a party grants another the right to use a patent under the condition that the licensee agrees to grant the licensor a license with respect to any improvements to that patent made by the licensee.

Used other than figuratively or idiomatically: see fall, back. / To retreat. / To fail to fulfill a promise or purpose.

Alternative form of fallback

simple past tense of run back

To take someone home by car; to give someone a lift to their house. / To rewind a film or cassette. / (slang) To revisit, repeat, or do something over.