Snowdonia
geographical name
Snow·do·nia snō-ˈdō-nē-ə 
-nyə
mountain region of northwestern Wales centering around Snowdon
- a devil of a time
- a dibs
- a difference of opinion
- a dime a dozen
- a dog's breakfast
- a dog's life
- a dose of someone's own medicine
- a drop in the ocean
- a due
- A end
- a face like thunder
- a fair crack of the whip
- a fair hearing
- a fair shake
- a far cry from
- a far sight
- a fat lot of good
- a fate worse than death
- a feast for the eyes
- a feather in one's cap
- a feather in someone's cap
- a feeling of
- a few bob
- a fight for one's life
- a figment of one's imagination