backspin

is likely misspelled.

has no English definition.

As a noun backspin

is spin applied to a ball in order to slow it, change its flight, or stop it when it lands.

As a verb backspin

is to spin (a ball) with this motion.

As verbs the difference between backspin and backspun

is that backspin is to spin (a ball) with this motion while backspun is (backspin).

As a noun backspin

is spin applied to a ball in order to slow it, change its flight, or stop it when it lands.

As nouns the difference between taxonomy and backspin

is that taxonomy is the science or the technique used to make a classification while backspin is spin applied to a ball in order to slow it, change its flight, or stop it when it lands.

As a verb backspin is

to spin (a ball) with this motion.

As nouns the difference between backspin and underspin

is that backspin is spin applied to a ball in order to slow it, change its flight, or stop it when it lands while underspin is backspin.

As a verb backspin

is to spin (a ball) with this motion.