The Collaborative International Dictionary of English v.0.48:
Roughen \Rough"en\, v. t. [imp. & p. p. Roughened; p. pr. & vb. n. Roughening.] [From Rough.] To make rough. [1913 Webster]WordNet (r) 3.0 (2006):
roughened adj 1: used of skin roughened as a result of cold or exposure; "chapped lips" [syn: chapped, cracked, roughened]