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!
by therealdeal.com October 06, 2013
Get the mug
Get a flapback mug for your bunkmate José.