acacias Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. any of various spiny trees or shrubs of the genus Acacia Example Sentence The giraffe ate leaves from the acacias. Synonyms tree; shrub; spiny tree Antonyms grass Hear It! Say It! Write It! acacias Switch to cursive Start Share with your friends: