/ Dictionary / Index L Lena: Meaning and Definition of Find definitions for: Le•na Pronunciation: (lē'nu Russ. lye'nu), [key] — n. a river in the Russian Federation in Asia, flowing NE from Lake Baikal through the Yakutsk Republic into the Laptev Sea. 2800 mi. (4500 km) long. a female given name, form of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lena (Thesaurus) Len Lenaea Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language