As a noun terms
is .
As a verb backspun is
(backspin).
terms
English
Noun
(head)
Statistics
*
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backspun
English
Verb
(head)
(backspin)
backspin
English
Noun
(-)
Spin applied to a ball in order to slow it, change its flight, or stop it when it lands.
Verb
To spin (a ball) with this motion.
See also
* check spin
* sidespin
* topspin