Backboard

['bækbɔːd] or ['bæk'bɔrd]

(noun.) a board used to support the back of someone or something.

(noun.) a raised vertical board with basket attached; used to play basketball; 'he banked the shot off the backboard'.

Edited by Joanne--From WordNet

(n.) A board which supports the back wen one is sitting;

(n.) A board serving as the back part of anything, as of a wagon.

(n.) A thin stuff used for the backs of framed pictures, mirrors, etc.

(n.) A board attached to the rim of a water wheel to prevent the water from running off the floats or paddies into the interior of the wheel.

(n.) A board worn across the back to give erectness to the figure.

Typist: Ora