Bitchen Ask Urban Dictionary about Bitchen Share definition Flag The term for the room in an urban apartment in which the bathroom is located in the kitchen. Trish's new apartment in Williamsburg has a Bitchen. Bitchen by david fagin July 29, 2007 Word of the Day on April 8, 2010 0 0 Bitchen Merch Get the Bitchen mug. Buy Now — $32.95 See more merch