Overview of noun screwballer

The noun screwballer has 1 sense

• screwballer -- ((baseball) a pitcher who throws screwballs)

Overview of adj screwball

The adj screwball has 1 sense

• crazy, half-baked, screwball, softheaded -- (foolish; totally unsound; "a crazy scheme"; "half-baked ideas"; "a screwball proposal without a prayer of working")