a small copy of an aircraft, train etc, especially one that a child can play with or put together from separate parts:
He is playing with his model railway.
She builds model aeroplanes in her spare time.
a wife, employee (=worker) etc who is considered to be good because they do everything they should [= exemplary]:
His lawyers tried to show him as a model husband and father.
a prison etc that has been specially designed or organized to be as good as possible