Cellar door (phrase)

Okay, little one, let's talk about the phrase "cellar door." When we say "cellar door," we're talking about the door that leads down to a basement or a cellar.

Now, some people think that "cellar door" is a really beautiful and pleasant-sounding phrase, even though it's just talking about a regular old door. They think the way the words sound when you say them together is nice to listen to.

It's kind of like when you hear a really pretty song, even if you don't understand all the words. You can still enjoy the way the music sounds, and the words might even sound pretty even if you don't know what they mean.

So, "cellar door" is just a phrase that some people think sounds nice and pleasant, even though it's just talking about a regular door that leads to a basement or a cellar.