The last row of seats in a theater or any group of seats. / A row near the back of the theater or group of seats. / (rugby) The row of players in a scrum, consisting of two flankers and a number eight.

The cover on the opposite side of the front cover of a book, magazine, etc; back of the book; associated with sports pages in publications.

A bad back, or that illness, humorously supposed to arise from excessive sexual intercourse.

(temporal location, idiomatic, informal) In the distant past; especially, at a time fondly remembered.

(cricket, of a batsman) Having the weight on the back foot in order to play a defensive stroke / (idiomatic) in a defensive posture; on the defensive; off balance; at a disadvantage.

(Tyneside) Alternative form of woollyback (“pejorative: an inhabitant of a rural area”). / (Scotland, derogatory) A term of abuse directed at Highlanders or rural folk in general.

A small, controlled fire set in the path of a larger uncontrolled fire, in order to limit the spread of the large fire by removing its fuel.

(hunting) An act of hounds retracing a course in order to pick up the lost scent of prey.

(hunting) Of hounds: to retrace a course in order to pick up the lost scent of prey. / (by extension) To return to where one has previously been; to retrace one's steps.

plural of back door