I used a Japanese - English dictionary (here or here) and found this:
wind blowing down from mountains
And that Kanji is only used in two words, and never by itself, so says the dictionary:
"Wilwild"? I'm not even sure what that English word means myself. So, I'm guessing the answer you're looking for is "oroshi" and "hi", and I'm guessing you know proper Japanese pronunciation. Also, I don't know if this is related or not, but I found some other meanings for "aburamushi", but they don't use the 鴟.
Anyway, I hope this helps. Maybe someone else will know more about this.