Meaning

noun someone who has committed a crime or has been legally convicted of a crime

noun a purulent infection at the end of a finger or toe in the area surrounding the nail

originThe adjective is derived from Middle English feloun, felun (“base, wicked; hostile; of an animal: dangerous; of words: angry, harsh, slanderous; of things: dangerous, deadly; false, fraudulent; unlucky”) [and other forms], from Old French felon (“bad, evil, immoral”) (compare fel (“evil; despicable, vile”)), from Early Medieval Latin fellōnem; further etymology uncertain. Doublet of fell (“of a…

Etymology from Wiktionary, CC BY-SA 3.0