0 past simple and past participle of feel --
1 to make wool or other cloth into felt (= a thick, soft cloth made from a mass of fibres) by rolling and pressing it and using hot water or a special needle: --
2 a type of thick, soft cloth made from a pressed mass of wool or other fibres: --
a felt hat
3 past simple and past participle of feel --
4 a thick cloth made from a pressed mass of wool, hair, or fur: --
a felt hat
Felted roofing needs regular supervision if it is to stay watertight once it's more than about 10 years old.
Asbestos fibres can be separated and woven into cloths or felted into sheets.
She picked up wool sweaters in charity shops and felted them with hot water in the washing machine.