The thing I like best about forums like this, is not just the sharing of ideas and information, but also that posts often prompt me to do some further research on a subject, just for my own benefit. Seems that every county has its own names for similar types of wind. One that I like I picked up in a book by Ranulph Fiennes about his Antarctic travels, which is Katabatic an incredibly cold power full wind.
I found this page on wikipedia quite informative
Katabatic wind - Wikipedia, the free encyclopedia WW