also: あおタン
noun
5-point blue tanzaku card; blue ribbon card
In hanafuda, a 5-point card featuring a blue 短冊 (tanzaku/poetry strip). One of the three blue tanzaku cards in the deck.
See also: 短冊
青短は花札の札の一つで、青い短冊が描かれている。
The aotan is one of the hanafuda cards, depicting a blue tanzaku.
noun
scoring combination of three blue tanzaku cards
A yaku (scoring combination) in hanafuda formed by collecting all three 5-point cards with blue tanzaku: the 青短 of peony, chrysanthemum, and maple.
青短ができれば5点入る。
If you form aotan, you get 5 points.
Compound of 青 (ao, 'blue') and 短 (tan), an abbreviation of 短冊 (tanzaku, 'poetry strip'). The term is specific to hanafuda.