also: おとおり
noun
otōri; drinking circle with a passed cup
A drinking custom from the Miyako Islands, Okinawa, where a cup of awamori is passed around and each person chugs it in turn.
宮古島では、宴会でオトーリをすることがよくある。
On Miyako Island, they often do otōri at parties.
オトーリの杯が回ってきたら、一気に飲み干すのが礼儀だ。
When the otōri cup comes around, it's polite to chug it in one go.
From Okinawan; the exact derivation is uncertain, but it refers to the passing of a cup around a circle.