Dictionary/心筋しんきんShinkin心筋 (Shinkin) is a Japanese noun meaning “cardiac muscle, heart muscle, myocardium”.Meaningsnouncardiac muscle; heart muscle; myocardiumKanji in 心筋心heart筋muscleRelated words心配worry心mind心heart安心peace of mind心臓heart心当たりhaving in mind心からfrom the bottom of one's heart筋muscle一筋one line中心center肝心essential熱心zealous