Our 7 year old has a way with words. I mentioned before about his coining the phrase "Man of Waves" to describe someone leaping in the breaking waves, like a surfer without a surfboard.
Here are some more he came up with when he didn't know the correct word for something. They make me think he has the soul of a poet:
Feather quill - "Pencil of Nature".
Rolled pork loin - "Loaf of Pig".
Bechamel sauce - "Cream of Destiny".
Update - a few days later: We think we've figured out where "Cream of Destiny" came from. He'd been reading a series of semi-graphic novels featuring anthropomorphic vegetable superheroes, one of whom gained a magical "Sword of Destiny".