/ Dictionary / Index A Aroostook: Meaning and Definition of Find definitions for: A•roos•took Pronunciation: (u-rs'took, -tik), [key] — n. a river flowing NE from N Maine to the St. John River. 140 mi. (225 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Aron Kodesh* arose Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language