Rotational Energy, Affects a Tennis Ball's Motion
This page is the CodyCross answer for the clue below from Mesopotamia, Group 977, Puzzle 3 (Barren Plains).
Question is: Rotational Energy, Affects a Tennis Ball's Motion
and the answer is: TOPSPIN
Word Meaning:
TOPSPIN — A rotational motion, especially that given to a ball, in which the upper surface spins in the direction of motion.
Definitions from Wiktionary.