Basement Jockey Share definition Flag Someone who spends most of their time in their relatives' basements for their own personal hobby. Linux coders. "Dan spent all night downstairs coding up the new kernel patch, he's a real basement jockey" Basement Jockey by Billy_Brasky1 December 31, 2008 0 0 Get merch Get the Basement Jockey mug. Buy Now — $32.95 See more merch