Definitionen
1.NounLayperson, someone who is not an ordained cleric or member of the clergy.
2.NounSomeone who is not a professional in a given field."Carmen is not a professional anthropologist, but strictly a layman.; Let me explain it to you in layman's terms."
3.NounA common person.
4.NounA person who is untrained or lacks knowledge of a subject.
5.NounLay-sister or lay-brother, person received into a convent of monks, following the vows, but not being member of the order.