Usage N.Amer.
1. Soft silky fibers from cotton plants in their raw state
2. Cotton made absorbent by removal of the natural wax; SYN. cotton wool.

Layers or sheets of raw cotton or wool or of synthetic fibrous material used for lining quilts or for stuffing or packaging; also; a blanket of thermal insulation (as fiberglass)

Worsted yarn, specifically; a worsted ribbon or binding formerly used for garters and girdles.

Raw cotton; especially; cotton batting. cottonwool

1. A soft mass, especially of some loose, fibrous substance, used for various purposes.
2. A little mass, tuft, or bundle, as of hay.
3. (Archaic) A little mass of some soft or flexible material, such as hay, paper, or old rope yarn, used for retaining a charge of powder in a gun.