- poppyAny plant of the genus Papaver or the family Papaveraceae, with crumpled, often red, petals and a milky juice having narcotic properties; especially a common poppy or corn poppy (Papaver rhoeas) which has orange-red flowers; the flower of such a plant.
- papaverAny plant of the genus Papaver, poppies.
- papaverousOf, pertaining to, or characteristic of the poppy.