a pitch with reverse spin that curves toward the side of the plate from which it was thrown
A pitch thrown with added pressure by the index finger and a twisting wrist motion resulting in a motion to the right when thrown by a right-handed pitcher.
foolish; totally unsound
"a crazy scheme"
"half-baked ideas"
"a screwball proposal without a prayer of working"
Crazy, offbeat, bizarre, zany, or weird.
The word screwball combines the words screw and ball. It is related to other terms like weird, which ultimately traces back to a common ancient root meaning "to turn."