Bon Appétit is the French for 'Enjoy your meal'. It was also used in many other places such as the name of a magazine. But if you
heard this or someone wrote it in an
email or a letter, just know that it means enjoy your meal.
P.S. the following example is a
real life quote that made me find and add this word in the dicionary:
Student:thanks for the meal today, believe it or not, today I
didnt have anything for
breakfast and not much for dinner the night
before, so that muffins were quite satisfying. :)
And I never thought of a strawberry that deep in my entire life.
Teacher: No doubt there'll probably be other unexpected things this quarter, but
I
don't know how many of them will be food oriented. "Bon Appetit" regardless.