Can be used as a noun and an adjective.
A term specific to the male gender while courting a mate or in a relationship. This is a guy who creates the illusion of grandeur, sets false expectations and consistently lets you down due to the false expectations. He is selfish, awkward and a bit of a mooch. Overall, he sucks at life and brings you down with him.
A guy who doesn't clean out his garage for you to park in, even though it takes you 15 minutes to drive to his house and 20 minutes to find legal parking because he refuses to come to your house since he doesn't have a car, won't ride his bike and won't take public transportation.
Noun. What a bashpole!
Adjective. That was a bashpole move.