the GNU version of the Collaborative International Dictionary of English
n. One who harasses.
The Century Dictionary and Cyclopedia
n. One who harasses or teases; a spoiler.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a persistent attacker
n. a persistent tormentor
Word Usage
"So they called the harasser's number and open the VP8 codec during the Google I/O conference next month, a move that could accelerate the adoption of HTML5 video."