Adjective screwball has 1 sense
  1. crazy, half-baked, screwball, softheaded - foolish; totally unsound; "an impractical solution"; "a crazy scheme"; "half-baked ideas"; "a screwball proposal without a prayer of working"
    Antonym: practical (indirect, via impractical)
,Noun screwballer has 1 sense
  1. screwballer - (baseball) a pitcher who throws screwballs
    --1 is a kind of
    pitcher, hurler, twirler
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