Answer: backboard

AnswerCrossword Clue
BACKBOARDWhere Wilt Chamberlain shines.
BACKBOARDRim holder
BACKBOARDObject on a basketball court
BACKBOARDPaper ... (directors at a publishing house?)
backboardAn upright board behind the basket, off which the ball may rebound
backboardA board used to support or straighten a person's back, esp. after an accident
backboardA board placed at or forming the back of something, such as a collage or piece of electronic equipment
backboarda board which supports the back when one is sitting