/ Dictionary / Index M macrurous: Meaning and Definition of Find definitions for: ma•cru•rous Pronunciation: (mu-kroor'us), [key] — adj. Zool. long-tailed, as a lobster (opposed to brachyurous). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macruran macula Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language