screwball Meaning, Definition & Usage

1. noun a whimsically eccentric person
   fruitcake; nut case; nut; crackpot; crank.
   
2. noun a pitch with reverse spin that curves toward the side of the plate from which it was thrown
   
3. adjective satellite foolish; totally unsound
   crazy; softheaded; half-baked.
   
   • a crazy scheme
   • half-baked ideas
   • a screwball proposal without a prayer of working

WordNet