Top Definition
A type of cap with a flap of material hanging down the back to cover the neck from sun exposure. Also referred to as a Legionnaire hat.
Dude, that flapback looks rad!

Man, this flapback will prevent skin cancer and make me look cool at the same time!
#legionnaire #snapback #hat #flapcap #tailcap
by therealdeal.com October 06, 2013
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