a climbing plant, especially one with dark green shiny leaves with five points stone walls covered in ivy see also poison ivy See related entries: Plants Word Origin Old English īfig, of Germanic origin; related to the first elements of Dutch eiloof and German Efeu.Extra examples Ivy grew up the side of the house. The ivy’s got very thick. It needs cutting back a bit. The walls were covered in ivy. There was ivy clinging to the wall. We’re going to grow a variegated ivy up the back of the house.