the GNU version of the Collaborative International Dictionary of English
n. One who besieges; -- opposed to the besieged.
The Century Dictionary and Cyclopedia
n. One who besieges.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an enemy who lays siege to your position
n. an energetic petitioner
Word Usage
"Josephus, following probably a Roman authority, gives an account of the fortifications of Jerusalem from the point of view of the besieger, which is confirmed in large part by modern research. ["