残のこりカス

noun

residue; remnants; dregs

Refers to the leftover, often worthless or unwanted part after the main part has been used or taken away. Can be used for physical scraps, sediment, or figurative remnants.

• コーヒーの残のこりカスを捨すててください。

  Please throw away the coffee grounds.

• 議ぎ論ろんの後あとには、いつも感かん情じょう的てきな残のこりカスが残のこる。

  After the argument, there are always emotional remnants left over.