lay ‧ man /ˈleɪmən/ BrE AmE noun ( plural laymen /-mən/) [countable]
1 . someone who is not trained in a particular subject or type of work, especially when they are being compared with someone who is OPP expert ⇨ laywoman :
To the layman (=laymen in general) all these plants look pretty similar.
If you don’t understand what the doctor says, ask to have it explained in layman’s terms (=in simple language) .
2 . someone who is not a priest but is a member of a church ⇨ laywoman