A house with a party wall at the rear.

to retreat from a position / to move backwards / to withdraw from an undertaking / to pull something back or apart

Alternative spelling of backslapping

(idiomatic) To retaliate against; to take revenge on.

present participle of backslap

action of the verb to backslap

A withheld payment for work which has already been completed, or which could have been completed had the employee not been prevented from doing so.

The passage between two terraced houses leading between the front and back gardens or yards. / (euphemistic) anus, rectum

(transitive) To hinder the development of something. / (intransitive) To revert to an earlier stage of development. / To retort. / Used other than figuratively or idiomatically: see throw, back.

A style of swimming using the backstroke.