1. backspin - Noun
2. backspin - Verb
spin (usually of a moving ball) that retards or reverses the forward motion
Source: WordNetA good chop will float nearly horizontally back to the table, in some cases having so much backspin that the ball actually rises. Source: Internet
A push resembles a tennis slice: the racket cuts underneath the ball, imparting backspin and causing the ball to float slowly to the other side of the table. Source: Internet
Aside from the initial direction change when bouncing, provided that it does not exceed the reach of the opponent, a cork-spun ball is easily countered with topspin or backspin. Source: Internet
Another difference is that unlike backspin and topspin, sidespin will have relatively very little effect on the bounce of the ball, much in the same way that a spinning top would not travel left or right if its axis of rotation were exactly vertical. Source: Internet
Sidespin can also be employed in offensive rally strokes, often from a greater distance, as an adjunct to topspin or backspin. Source: Internet
At the professional level, backspin is usually used defensively in order to keep the ball low. Source: Internet