资料来源 : Webster's Revised Unabridged Dictionary (1913)

Roughen \Rough"en\, v. t. [imp. & p. p. {Roughened}; p. pr. &
   vb. n. {Roughening}.] [From {Rough}.]
   To make rough.

资料来源 : WordNet®

roughened
     adj : used of skin roughened as a result of cold or exposure;
           "chapped lips" [syn: {chapped}, {cracked}]