Teasel

Part of speech: noun (n.)

1. A plant of the genus Dipsacus, of which one species (D. fullonum) bears a large flower head covered with stiff, prickly, hooked bracts. This flower head, when dried, is used for raising a nap on woolen cloth.

2. A bur of this plant.

3. Any contrivance intended as a substitute for teasels in dressing cloth. Teasel frame, a frame or set of iron bars in which teasel heads are fixed for raising the nap on woolen cloth.

Part of speech: verb (v.)

To subject, as woolen cloth, to the action of teasels, or any substitute for them which has an effect to raise a nap.