Islamic calendar, Mohammedan calendar, Moslem calendar, Muhammadan calendar, Muslim calendar - the lunar calendar used by Muslims; dates from 622 AD (the year of the Hegira); the beginning of the Muslim year retrogresses through the solar year completing the cycle every 32 years

Islamic calendar month - any lunar month in the Muslim calendar

fast, fasting - abstaining from food

Islam, Mohammedanism, Muhammadanism, Muslimism, Islamism - the monotheistic religion of Muslims founded in Arabia in the 7th century and based on the teachings of Muhammad as laid down in the Koran; "the term Muhammadanism is offensive to Muslims who believe that Allah, not Muhammad, founded their religion"