FELT (3)

felt (3). Felt, n. a kind of stuff made by fulling wool, or wool and fur, a hat so made

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Felt, v. t. [imp. & p. p. Felted; p. pr. & vb. n. Felting.] 1. 1. To make into felt, or a feltike substance; to cause to adhere and mat together. Sir M. Hale.
2. 2. To cover with, or as with, felt; as, to felt the cylinder of a steam engine.