/ Dictionary / Index A arson: Meaning and Definition of Find definitions for: ar•son Pronunciation: (är'sun), [key] — n. the malicious burning of another's house or property, or in some statutes, the burning of one's own house or property, as to collect insurance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arson (Thesaurus) Ars Nova arsonist Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language