Metaphor

The Technical Stuff:

Metaphor compares two different things by speaking of one in terms of the other. Unlike a simile or analogy, metaphor asserts that one thing is another thing, not just that one is like another. 

Example:

Lenny: Hey, maybe there is no cabin. Maybe it's one of them metaphorical things.
Carl: Oh yeah, yeah. Like maybe the cabin is the place inside each of us, created by our goodwill and teamwork.
Lenny: Nah, they said there would be sandwiches.
(The Simpsons)