shoe polish
Refers to the substance used to shine or color leather shoes. Common in everyday contexts.
靴墨で革靴を磨いた。
I polished my leather shoes with shoe polish.
この靴墨は色が豊富だ。
This shoe polish comes in many colors.
Compound of 靴 (shoe) and 墨 (ink, blacking), referring to a blacking substance for shoes.