railbird
n.— «The hustler inside takes over and many players take to the rail, sometimes roaming the streets, sleeping in cars, and rehearsing their latest hard-luck story. Affectionately known as “railbirds,” these poker room fixtures have been panhandling and running errands for players since the dawn of the game.» —“Poker Bustouts: Documentary Chronicles Highs and Lows of Poker Pros” by Willis Entertainment Inc. WebWire Aug. 2, 2005. (source: Double-Tongued Dictionary)