1. One that owes something to another.
2. One who is guilty of a trespass or sin; a sinner.

[Middle English dettour, from Old French dettor, from Latin dēbitor, from dēbitus, past participle of dēbēre, to owe. See debt.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.