Is “Topspin” a Scrabble word?
Yes
TOPSPIN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Topspin
noun
1.A rotational motion, especially that given to a ball, in which the upper surface spins in the direction of motion.
“The tennis star was famed for her topspin.”
2.An edgy, quirky or otherwise engaging quality that holds the interest of the audience.
Synonyms: forespin
verb
1.To spin (a ball) with this motion.