/ Dictionary / Index S second lien: Meaning and Definition of Find definitions for: sec'ond lien' Pronunciation: [key] a lien subordinate to a previous or preferred lien. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. second law of thermodynamics second lieutenant Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language