Wordnet 3.0
ADJECTIVE (1)
1. 
 having calluses; 
 having skin made tough and thick through wear; 
- Example: "calloused skin"- Example: "with a workman's callous hands"[syn: calloused, callous, thickened]
The Collaborative International Dictionary of English v.0.48:
calloused \cal"loused\ adj.
   having callouses; -- of skin.
   Syn: thickened.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
calloused
    adj 1: having calluses; having skin made tough and thick through
           wear; "calloused skin"; "with a workman's callous hands"
           [syn: calloused, callous, thickened]