滄海の一粟 そうかいのいちぞく Also written 蒼海の一粟 Meanings Expression, Noun drop in the bucket; drop in the ocean (literally: one grain of millet in a vast ocean) Kanji 滄 ocean. Read as ソウ. 海 sea. Read as カイ. 一 one. Read as イチ. 粟 millet. Read as ゾク. Word lists Idioms Jinuma: Japanese Dictionary · Word lists