Dictionary
screw•ball
Pronunciation: (skrOO'bôl"), [key]—
n.
1. Slang.an eccentric or whimsically eccentric person; a nut.
2. Baseball.a pitched ball that curves toward the side of the plate from which it was thrown.
—
adj.
Slang.eccentric or whimsically eccentric:
What a screwball idea! Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.