amice

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Ecclesiastical A liturgical vestment consisting of an oblong piece of white linen worn around the neck and shoulders and partly under the alb.

Century Dictionary and Cyclopedia

1. n. . A loose wrap or cloak.
2. n. In the Roman Catholic Church and in many Anglican churches, an oblong piece of linen, large enough to cover the shoulders, worn with the upper edge fastened round the neck, under the alb, whenever the latter vestment is used. Formerly it was drawn over the head until the more solemn parts of the mass were reached, when it was turned down; this custom is still partially observed by friars not wearing the clerical cap or biretta. It is usually embroidered with a large cross, and formerly had an apparel of orphrey-work, which on being turned down served as an ornamental collar. It symbolizes the helmet of salvation. See amictus.
3. n. Also written amict.
4. n. A furred hood having long ends hanging down the front of the dress, something like the stole, worn by the clergy from the thirteenth to the fifteenth century for warmth when officiating in the church during inclement weather. It is still carried, thrown over the left arm, as a part of the ceremonial costume by the canons of certain cathedral churches in the north of France. The hood has become a pocket for the breviary. Also written almuce, aumuce.

GNU Webster's 1913

1. n. A square of white linen worn at first on the head, but now about the neck and shoulders, by priests of the Roman Catholic Church while saying Mass.
2. n. A hood, or cape with a hood, made of lined with gray fur, formerly worn by the clergy; -- written also amess, amyss, and almuce.