yesternight /ˈjɛstə(ɹ)naɪt/adverb 1noun 1forms 1 adverb1 •(no longer used) Last night.He tooke his rouse with stopes of Rhennish wine / So kindly yesternight to Bruno's health, / That all this day the sluggard kéepes his bed. — 1589 noun1 •(no longer used) A preceding night. formsyesternights
