coif

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A coiffure.
• noun A tight-fitting cap worn under a veil, as by nuns.
• noun A white skullcap formerly worn by English lawyers.
• noun A hood of chain mail or other heavy material, usually worn under a helmet.
• noun A cervellière.
• transitive verb To arrange or dress (the hair).
• transitive verb To cover with or as if with a coif.

from The Century Dictionary.

• To cover or dress with or as with a coif.
• noun A cap fitting close to the head, and conforming to its shape.
• noun A cap like the calotte or skull-cap, usually of lawn, retained until the common introduction of the wig, especially as the head-dress of barristers.
• noun A skull-cap of leather or of stuff, apparently wadded, made of many thicknesses, or provided with a thickened rim or edge (see bourrelet), worn under the camail to prevent the links of the chain-mail from wounding the head when struck, or to prevent the heavy steel headpiece from pressing too heavily upon the head.
• noun Figuratively, the calling or rank of a barrister: as, a brother of the coif.
• noun In armor: A cap of chain-mail or of bezanted or scale armor, usually distinct from the camail, and worn over it as an additional defense, or to cover the top of the head when the camail reached only about to the ears. Also called coif of mail, cap of mail, mail coif, and coiffe-de-mailles.
• noun The camail itself.
• noun A skull-cap of steel, worn over the camail, or perhaps in some cases worn under the camail, or mail coif. Also called coif of plate, coiffe-de-fer, cervelière, and secret.
• noun A light cap of lace, worn by women at the present day.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To cover or dress with, or as with, a coif.
• noun A cap.
• noun A close-fitting cap covering the sides of the head, like a small hood without a cape.
• noun An official headdress, such as that worn by certain judges in England.
• noun a coiffure.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A hairdo
• noun A hood; a close-fitting cap covering much of the head, widespread until XVIII century; after that worn only by small children and countrywomen
• noun A chain mail head gear
• verb transitive To style or arrange hair.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a skullcap worn by nuns under a veil or by soldiers under a hood of mail or formerly by British sergeants-at-law
• verb arrange attractively
• noun the arrangement of the hair (especially a woman's hair)
• verb cover with a coif