1. any material used for stuffing (uncountable)

2. tufts or masses of hair removed from the skin of short-haired animals before tanning

3. waste from hackling or spinning of wool or silk; linters, flock (textile, uncountable)

4. down or floss on plants, especially buds; burr (uncountable)

5. a wad for use in firearms or cannons

6. a cop (slang, dated)