n. One who has committed the act of arson, or illegally setting fire to property.
the GNU version of the Collaborative International Dictionary of English
n. a criminal who illegaly sets fire to property.
The Century Dictionary and Cyclopedia
n. One who commits arson.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a criminal who illegally sets fire to property
Word Usage
"A serial arsonist is at work in Mount Hope, many more people die, and Mulligan, having no faith in the city's incompetent police and crooked politicians, embarks on a personal crusade to find the killer."