Quoting from [Dick Moby]: Hi Dick, it said the Forbidden Fruit was apple; hence Adam's Apple.
Moolan
To Dick Moby
I would add
10. "The Big Apple" -- a nickname given to New York City.
11. "...as American as apple pie."
12. "...mixing apples and oranges": comparing things that should not be compared.
Quoting from [Dick Moby]: Hi Dick, how about "Newton's Apple"? According to the myth, Newton thought of the idea of gravity when an apple fell on his head as he was gazing at the moon in the day-time sky.
Moolan