Ugly girls who stand near the entrance of a VIP booth at a club hoping to attract any guy's attention to get a free drink.
"Can you believe that railbird actually asked if I had any matches? Bitch wasn't smart enough to even ask me for a lighter."
by Extra Mayo April 29, 2014

A female poker groupie. Could also apply to other gambling games where spectators stand around the table.
by Bill gronos June 27, 2006

You should see the side money games at pool expo - I saw a race to 21 racks of 10-ball for $5,000. Must've been 50 railbirds around that table getting in on the action.
by Break_And_Run March 18, 2009
