Definition, an old saying when my parents were young, comercial beaver meant hookers, prostitutes, broads who can take a dick, not only take a dick, but that bitch can take it damn good, far deep throated.
"Hey man did you see that commercial beaver up the road?"
"yeeeh man, that broad would be good for all ten minutes man,i'd hit that for more than an hour!"
Any famous person who is only in the entertainment industry in order to gain fame and fortune.
Rihanna is a commercial whore.