noun arum any plant of the aroid genus Arum, of Europe and the Mediterranean region, having arrow-shaped leaves and a typically white spathe 3
noun arum any plant of the arum family (esp. genus Arum) which is characterized by small flowers on a thick spike, within a hoodlike leaf 3
adjective arum designating a family (Araceae, order Arales) of monocotyledonous plants growing throughout the world, including the jack-in-the-pulpit and skunk cabbage 3
noun arum variety of lily 1
noun arum A North American and European plant that has arrow-shaped leaves and a broad leafy spathe enclosing a club-shaped spadix, and that bears bright red berries in late summer. 1
