Sentence:  Two Dwarfs were at the bellows, another was holding a piece of red-hot metal on the anvil with a pair of tongs, a fourth was hammering it, and two, wiping their <WSD>horny</WSD> little hands on a greasy cloth, were coming forward to meet the visitors. 
Meaning of the word marked with <WSD> tags:  Hard or bony, like an animal's horn.