ダンダンFreq.FrequencyTop 5,000Meanings1nounoutsbaseballBaseball term for the number of outs. Often used in phrases like ツーダン (two outs) or ワンダン (one out).from English downSee also: ダウンツーダンでランナーが一いち塁るいにいる。With two outs, there's a runner on first.ワンダンから逆ぎゃく転てんした。They came from behind with one out.