Yes, that's a nice dictionary definition. Metaphors arise from
   our cognitive structures, Kurt. They're based upon how we
   interpret the world based on our limited input mechanisms,
   analogized to pre-existing knowledge and, once cognitive
   dissonance is resolved, incorporated into our body of general
   knowledge. It's how we learn. Dictionaries play around in the
   platonic realm too much. == Words change meaning constantly
   depending on usage, Kurt. It's a myth that meaning is
   crystalized somehow. Magical thinking, Kurt. Magical thinking.
   Not how the real world works. Replace "metaphor" with "analogy"
   if it makes it easier for to comprehend basic cogsci. ===