Many of us (non-Yanks) use the term often to refer to a small meal before the main course - usually at a restaurant.
Apparently it is commonly used in the US and non-froggy Canada to refer to the main course itself.
I did not know this. Did you know this?
The moar you know!
Observant readers will have discovered by now that the word is sometimes used to denote "the act of entering".
For example:
FUN FAKT! RIGHTNING ROUND!Have you seen the video of my entrée into Rico's mum?
Ask Oxford uses a stupid search system that is incapable of recognising the word "entrée" (with the accented "e") and returns nothing for that term.
However, it returns an entry for "entrée" (with the accented "e") when one searches for "entree" (without the accent).
Activity Corner
Host a discussion in which you advocate the use of an alternative pronounciation to "entrée" along the lines of the British lower class' "café" (pronounced "caff").
Have an adult supervise if you're worried that your friends will snap and start shooting people every time you say "onter".
Sources:
http://dictionary.reference.com/browse/entree
http://www.askoxford.com/concise_oed/entree?view=uk
http://en.wikipedia.org/wiki/Entree