mufti

from The Century Dictionary.

• noun A Mohammedan law-officer whose duty it was to expound the law which the kadi was to execute.
• noun In India, citizen's dress worn by officers when off duty: now commonly used in this sense in the British army.

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

• noun An official expounder of Mohammedan law.
• noun One of the chief legal advisers to the Sultan of the Ottoman Empire.
• noun Colloq. Eng. Ordinary civilian dress when worn by persons who serve in a uniformed service, such as the military or police. It originally was used in reference to British naval or military officers, and originated with the British service in India.

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

• noun countable (Islam) A Muslim scholar and interpreter of shari’a law, who can deliver a fatwa
• noun uncountable (UK, New Zealand) Civilian dress when worn by a member of the military, or casual dress when worn by a pupil of a school who normally would wear uniform

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

• noun a jurist who interprets Muslim religious law
• noun civilian dress worn by a person who is entitled to wear a military uniform