godan verb (-ru), intransitive verb
swing and miss; whiff
Colloquial verb derived from 空振り (からぶり). Used in baseball and metaphorically for failed attempts.
See also: 空振り
バッターは思い切りスイングしたが、空振った。
The batter swung with all his might but missed.
彼のジョークはいつも空振る。
His jokes always fall flat.