Any plant of the genus Papaver, the poppies.

plural of papaver

(organic chemistry, pharmacology) A nonaddictive derivative of opium used in medicine to relieve muscle spasms, as a vasodilator and in some forms of erectile dysfunction.

(organic chemistry) Any of a class of methyl acetals derived from the poppy.

plural of papaverrubine

A vasodilator.

plural of papaverine

A mixture of hydrochloride salts of opium alkaloids, used for pain relief and sedation.

Of or pertaining to the poppy family Papaveraceae.

Of, pertaining to, or characteristic of the poppy. / (figuratively) Inducing sleep; soporific.