一いち目もく散さんTop 50000MeaningsNoun1. running at full speed; going as fast as one can goKanji used一one目eye散scatter aroundPitch accentいちもくさんUsed in vocabulary一いち目もく散さんにat full speed; as fast as one's legs can carry oneAdverbExamples1犬いぬは一いち目もく散さんに逃にげ出だした。The dog ran off as fast as it could.