from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Ecclesiastical An ankle-length garment with a close-fitting waist and sleeves, worn by the clergy and others assisting in church services.
from the GNU version of the Collaborative International Dictionary of English
- n. A long outer garment formerly worn by men and women, as well as by soldiers as part of their uniform.
- n. A garment resembling a long frock coat worn by the clergy of certain churches when officiating, and by others as the usually outer garment.
from The Century Dictionary and Cyclopedia
- n. Any loose robe or outer coat, but particularly a military one.
- n. A long clerical coat, buttoned over the breast and reaching to the feet, and confined at the waist by a broad sash called a circline.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a black garment reaching down to the ankles; worn by priests or choristers
French casaque, long coat, from Old French, perhaps from Italian casacca, from Persian kazhāgand, padded garment : kazh, raw silk + āgand, stuffed.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French casaque ("cloak"). (Wiktionary)