(n.) A person eighty years, or more, of age\.

Father Time L Methuselah Nestor Old Paar Sexagesima boxcar boxcars centenarian dotard dozen duodecimo eighty elder eleven fifteen fifty five and twenty fortnight forty four and twenty fourscore fourscore and ten fourteen gaffer geezer golden-ager gramps grandfather grandsire graybeard half a hundred long dozen ninety nonagenarian old chap old codger old dog old duffer old geezer old gent old gentleman old man old party old-timer older oldster pantaloon patriarch presbyter quindecennial quindecim quindecima quindene score senior citizen septuagenarian seventy sexagenarian sexagenary sexagesimo-quarto sixteen sixteenmo sixty sixty-four sixty-fourmo teens the quiet-voiced elders thirteen thirty-two thirty-twomo threescore threescore and ten twelve twelvemo twenty twenty-five twenty-four twenty-fourmo two dozen two weeks twoscore venerable sir veteran