Definitions for "Screwball"
a pitch with reverse spin that curves toward the side of the plate from which it was thrown
an unusual pitch often thrown by left-handers
The opposite of a curveball. It curves from left to right for a right-handed batter, and from right to left for a left-handed batter.
foolish; totally unsound; "an impractical solution"; "a crazy scheme"; "half-baked ideas"; "a screwball proposal without a prayer of working"
a whimsically eccentric person