Baseball Pitch That Dips in an Unexpected Arc
Puzzle 8 of Quiet Things Piece of Cake Pack
Question is: Baseball Pitch That Dips in an Unexpected Arc
and the answer is: CURVEBALL
Word Meaning:
CURVEBALL — (baseball) A forespin pitch thrown by rotating the index and middle fingers down and resulting in motion down "curve"
Definitions from Wiktionary.