そうかいいちぞく 滄海の一粟 LinksSentence search for 滄海の一粟Sentence search for そうかいのいちぞくSentence search for 蒼海の一粟Kanji details for 滄, 海, 一 and 粟Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. drop in the bucket; drop in the ocean; one grain of millet in a vast oceanIdiomatic expressionOther forms蒼海の一粟 【そうかいのいちぞく】 Discussions Log in to talk about this word.