/ Dictionary / Index O Old Latin: Meaning and Definition of Find definitions for: Old' Lat'in Pronunciation: [key] the Latin language in use from the earliest inscriptions to c100b.c.Abbr.: OL, OL., O.L. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Old Lady of Threadneedle Street old-line Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language