[talmand]

Curious, was the word "sandwich" used in that context before the invention of the sandwich by the Earl of Sandwich?

If not, I don't think you can use a secondary definition of a word as an example for the primary definition when the secondary definition exists solely because of the primary definition.

[kgwgk]

This reminds me of a great line from DeVito in Heist:

“Everybody needs money! That's why they call it money!”

http://miniver.blogspot.ch/2004/02/everybody-needs-roger-ebe...

[cdcarter]

There was a logical flaw there perhaps, but I stand by my point.

Per a Guardian article linked side-thread, the sandwich was invented by our good Earl for a easily portable and hand-eatable food. One would not call an open-faced nightmare that.