noun
cloth strainer; filter cloth
A piece of cloth used for straining or filtering liquids or fine particles, such as in cooking or industrial processes.
味噌汁を作るとき、こし布でだしをこす。
When making miso soup, I strain the broth with a cloth strainer.
この濾し布は目の細かいナイロン製です。
This filter cloth is made of fine-mesh nylon.
Compound of こし (連用形 of こす 'to strain, filter') + 布 (ぬの 'cloth').