mé·sange \māˈzäⁿzh\noun (pluralmé·sanges \-zh(ə̇z)\) Etymology: French, titmouse, from Middle French, from Old French mesenge, masenghe, of Germanic origin; akin to Old High German meisa titmouse — more at titmouse : a pale green that is bluer and duller than celadon gray or spray green — called also titmouse blue