Search Result for "besieger": 
Wordnet 3.0

NOUN (2)

1. an enemy who lays siege to your position;

2. an energetic petitioner; 



The Collaborative International Dictionary of English v.0.48:

Besieger \Be*sie"ger\, n.
   One who besieges; -- opposed to the besieged.
   [1913 Webster]


WordNet (r) 3.0 (2006):

besieger
    n 1: an enemy who lays siege to your position
    2: an energetic petitioner