aventail

from WordNet (r) 3.0 (2006)
aventail
    n 1: a medieval hood of mail suspended from a basinet to protect
         the head and neck [syn: {camail}, {aventail}, {ventail}]
from The Collaborative International Dictionary of English v.0.48
Aventail \Av"en*tail\, n. [OF. esventail. Cf. {Ventail}.]
   The movable front to a helmet; the ventail.
   [1913 Webster]
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