L0216500 (lōn′shär′kĭng)n.Informal The practice of lending money at usurious, often illegal interest rates.
loan′shark`ing
or loan′-shark`ing,
n. Informal. the practice of lending money at excessive rates of interest. [1910–15, Amer.]LegalSeeLoan SharkFinancialSeeLoan sharkThesaurusSeeloan shark