Wordnet 3.0
NOUN (1)
1. 
 a person who mends by darning; 
The Collaborative International Dictionary of English v.0.48:
Darner \Darn"er\ (d[a^]rn"[~e]r), n.
   One who mends by darning. Darnex
WordNet (r) 3.0 (2006):
darner
    n 1: a person who mends by darning