/ Dictionary / Index B baleen: Meaning and Definition of Find definitions for: ba•leen Pronunciation: (bu-lēn'), [key] — n. whalebone (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: baleen (Thesaurus) bale cubic baleen whale Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language