竜吐水 りゅうどすい Also written 龍吐水 Meanings Noun hand-operated firefighting pump (used throughout the Edo and Meiji periods) water pistol; squirt gun; water gun See also: 水鉄砲 (みずでっぽう). Kanji 竜 dragon. Read as リュウ. 吐 vomit 水 water. Read as スイ. Jinuma: Japanese Dictionary · Word lists