My cabal of photogs has no idea what a "Prime" is, and neither do I. Yet, it seems to be a popular term on the Net. Could someone please define it for me.

So far We've gathered it's one of the following:

1) a fixed focal length lens

2) the "best" lens of that fixed focal length for whatever camera.

3) really really nice glass.

4) lenses that come in focal lengths of 23mm 59mm 103mm or 151mm

my money is on #4