flock 2 
(flŏk)
(flŏk)n.
1. A tuft, as of fiber or hair.
2. Waste wool or cotton used for stuffing furniture and mattresses.
3. Pulverized wool or felt that is applied to paper, cloth, or metal to produce a texture or pattern.
4. See floccule.
tr.v. flocked, flock·ing, flocks
1. To stuff with waste wool or cotton.
2. To texture or pattern with pulverized wool or felt.
[Middle English flok, from Old French floc, from Latin floccus, tuft of wool.]