/ Dictionary / Index L loan shark: Meaning and Definition of Find definitions for: loan' shark" Pronunciation: [key] — Informal. Informal. a person who lends money at excessively high rates of interest; usurer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. loan office loansharking 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