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plural camails
(historical) A piece of chainmail worn to protect the neck and shoulders, replacing the whole-head coif. quotations
[…] the hood was increasingly replaced with a mail curtain (the camail or aventail) suspended from the outside of the bascinet, and the bascinet thus augmented gradually replaced the clumsy great helm as the principal defense […]
1995, William W. Kibler, Medieval France: An Encyclopedia, Psychology Press, page 126
(historical) An ecclesiastical ornament worn by bishops.