心残 こころのこ
kokoronokori

Noun
na-Adjective

1. regret

わたくし かれ いっ やさしくしてやらなかったのが心残 こころのこりだ。
watashiwa kareni ichidomo yasashikushite yaranakatta noga kokoronokorida
I regret that I have never been kind to him.
Noun

2. flesh, blood vessels and fat from around chicken heart (usu. served as yakitori)

Usually Written in Kana