1. (n.) A person guilty of committing a grave crime or felony\.

2. (n.) A person guilty or capable of heinous crime.

3. (n.) A kind of whitlow; a painful inflammation of the periosteum of a finger, usually of the last joint.

4. (a.) Characteristic of a felon; malignant; fierce; malicious; cruel; traitorous; disloyal.

Judas abscess aposteme bad person bed sore betrayer blain bleb blister boil bubo bulla bunion canker canker sore carbuncle chancre chancroid chilblain cold sore convict criminal crook culprit deceiver delinquent desperado desperate criminal double-dealer eschar evildoer fester festering fever blister fistula fugitive furuncle furunculus gallows bird gangster gaolbird gathering gumboil hemorrhoids jailbird kibe lawbreaker lesion malefactor malevolent malfeasant malfeasor miscreant misfeasor mobster offender outlaw papula papule paronychia parulis petechia piles pimple pock polyp public enemy pustule quisling racketeer rising scab scofflaw sinner soft chancre sore stigma sty suppuration swelling swindler traitor transgressor tubercle two-timer ulcer ulceration villain wale welt wheal whelk whitlow worker of ill wound wrongdoer