/ Dictionary / Index A Athabaska: Meaning and Definition of Find definitions for: Ath•a•bas•ka Pronunciation: (ath"u-bas'ku), [key] — n. a lake in W Canada, in NW Saskatchewan and NE Alberta. ab. 200 mi. (320 km) long; ab. 3000 sq. mi. (7800 sq. km). a river in W Canada flowing NE from W Alberta to Lake Athabaska. 765 mi. (1230 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ateste Athabaskan Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language