Sentence:  On his long, gaunt body, he carried no spare flesh, no superfluous beard, his chin having a soft, economical <WSD>nap</WSD> to it, like the worn <WSD>nap</WSD> of his broad-brimmed hat. 
Meaning of the word marked with <WSD> tags:  (fabric surface) A soft or fuzzy surface, generally on fabric or leather.