Definition of "Philemon" :

noun: a New Testament book containing an epistle from Saint Paul to Philemon asking Philemon to forgive the slave for escaping

noun: (New Testament) a Christian (probably living in Colossae) whose slave escaped and went to see Saint Paul

noun: (Greek mythology) a simple countryman who offered hospitality to Zeus and Hermes when they came to earth without revealing their identities in order to test people's piety