心しん血けつしんけつFreq.FrequencyTop 50,000Meanings1nounheart and soul; all one's energyUsed almost exclusively in the set phrase 心血を注ぐ (to pour one's heart and soul into something). Rarely appears outside this expression.See also: 心血を注ぐ彼かれは研けん究きゅうに心しん血けつを注そそいだ。He poured his heart and soul into his research.