1. backboard - Noun
2. backboard - Verb
A board which supports the back wen one is sitting;
A board serving as the back part of anything, as of a wagon.
A thin stuff used for the backs of framed pictures, mirrors, etc.
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.
A board worn across the back to give erectness to the figure.
Source: Webster's dictionaryhe banked the shot off the backboard Source: Internet
For safety reasons, the first shot of a penalty corner must not exceed 460 mm high (the height of the "backboard" of the goal) at the point it crosses the goal line if it is hit. Source: Internet
Bubba Parham’s heave from just beyond half court hit high off the backboard for Georgia Tech as the final buzzer sounded. Source: Internet
A target, the house, is centred on the intersection of the centre line, drawn lengthwise down the centre of the sheet and the tee line, drawn convert from, and parallel to, the backboard. Source: Internet
However, if the ball is deemed to be below backboard height, the ball can be subsequently deflected above this height by another player (defender or attacker), providing that this deflection does not lead to danger. Source: Internet
It is also illegal under NBA and Men's NCAA basketball to block a shot after it has touched the backboard, or when any part of the ball is directly above the rim. Source: Internet