/ Dictionary / Index M monacillo: Meaning and Definition of Find definitions for: mo•na•cil•lo Pronunciation: (mon"u-sē'ō Sp. mô"nä-sē'yô), [key] — pl. -cil•los a low shrub, Malvaviscus arboreus, of tropical America, having scarlet flowers and berrylike fruit that is sticky when young. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monacid Monaco Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language