1. n. (military) slang for a BCD or "bad conduct discharge", the second least desired status of a US military serviceman.
A serviceman usually leaves with an honorable, general under honorable conditions, general under dishonorable conditions, or the big chicken dinner. If he really fucked up, he'll get a dishonorable discharge.
A tall scrawny kid who's just starting out with getting used to always looking over everyone else's heads in da crowd.
Da term "biginner" could also refer to a well-hung dude who is first experiencing da challenges of attempting sex wif women who have merely average-sized vaginas.