Have you ever been to a wine tasting? Modern, professional wine tasters (such as sommeliers) use a constantly evolving formal terminology which is used to describe the range of perceived flavours, aromas and general characteristics of a wine, the language used is full of jargon, but now you can join in, just use this handy little tasting notes generator.
Do try the "extra silly" one too.
You can read about how it works here:-
If you are genuinely interested in wine, try Robert Parker's site. It's much more sensible, but not as much fun.