Wordnet 3.0
NOUN (1)
1. 
 a portable gun; 
- Example: "he wore his firearm in a shoulder holster"[syn: firearm, piece, small-arm]
WordNet (r) 3.0 (2006):
small-arm
    n 1: a portable gun; "he wore his firearm in a shoulder holster"
         [syn: firearm, piece, small-arm]