/ Dictionary / Index A acacia: Meaning and Definition of Find definitions for: a•ca•cia Pronunciation: (u-kā'shu), [key] — n. a small tree or shrub belonging to the genus Acacia, of the mimosa family, having clusters of small yellow flowers. any of several other plants, as the locust tree. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acacia (Thesaurus) ACAA Acacia Avenue Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language