earflap

from WordNet (r) 3.0 (2006)

earflap
    n 1: one of two flaps attached to a cap to keep the ears warm
         [syn: {earflap}, {earlap}]

from The Collaborative International Dictionary of English v.0.48

earflap \earflap\ n.
   one of two flaps attached to a cap to keep the ears warm. On
   some hats the earflaps may be adjusted or tied to the top of
   the hat, and lowered when needed in colder weather.

   Syn: earlap.
        [WordNet 1.5 +PJC]