Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: morphia Your choice? European mulberry having dark foliage and fruit the lunar calendar used by Moslems; dates from 622 AD (the year of the Hegira); the beginning of the Moslem year retrogresses through the solar year completing the cycle every 32 years   (Noun: moslem calendar) an alkaloid extracted from opium; a powerful, habit-forming narcotic used to relieve pain silvery topminnow with rows of black spots of tropical North America and West Indies; important in mosquito control   (Noun: mosquitofish)