筒 つつ Meanings Noun pipe; tube; cylinder gun barrel gun; cannon well lining; well curb Kanji 筒 tube. Read as つつ. Common phrases 筒に入れる 長い筒 細い筒 Words containing 筒 筒井 (つつい) round well 井筒 (いづつ) well curb 筒抜け (つつぬけ) being heard (by others) And 21 more. Word lists JLPT N1 Jinuma: Japanese Dictionary · Word lists