Most people first heard cellar door as a "beautiful" combination, thanks to the movie 'Donnie Darko'. Which is a VERY cool movie.
cystic fibrosisties first with cellar door. As they both sound great.
Words starting with C but are pronounced as an S make pretty words.
Can be made of wood.
Can be made of metal, which can be diamond plate.
It can be flat and part of the ground, or it can be at an angle forming a bank.
People use cellar doors to enter basements.
There is usually a lock on a cellar door.