You may get away with it if it has nothing to do with google adsense. I would stay away from it either way. Good luck...
But you will not be able to use google adsense on the domain. Keep in mind, that is a trademarked name of google. Personally I would not as what if in the future google decides again to go after domain with their trademarks in them.
Well, you could always use a domain name like "headsenseless" It contains "adsense", and I think noone will question your right to hold the name.
www.adsense.com doesnt belong to google, so i'd say you ll be alright if you use that in your domain name.