An ugly, unpleasant, or otherwise objectionable person.
An illustration of a face with a cartoonishly wide, maniacal grin (from a comic drawn by Carlos Ramirez and originally posted on the 4chan community), typically featured in image macros to convey trolling, mockery, or humorous intent.
The act of one who trolls (in various senses).
A fishing technique in which one or more baited fishing lines are dragged by a moving boat. Not to be confused with trawling, which drags a net.