Top definition
A girl that you pick up in a club, bar, street or late night venue at 3am in the morning.

Usually pretty ugly, larger than the average, and very open to invites from anyone who is interested.
John: "How was your night?"

Richard: "Oh met a 3am bird and took her home!"

John: "Unlucky, but sometimes required :-)"

Richard: "True, but waking up next to her was very unlucky"
by TrayManator January 23, 2012
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