/ Dictionary / Index H Harleian Library: Meaning and Definition of Find definitions for: Har'le•ian Li'brary Pronunciation: (här'lē-un), [key] a large library of manuscripts collected by the British statesman Robert Harley and his son and now housed in the British Museum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Harlan Harlem Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language