papaverous
/pəˈpeɪvərəs/ /pəˈpavərəs/Now rare
adjective
Characteristic of, related to, or resembling the poppy; papaveraceous. Also in extended use (now rare ): soporific.
Origin
Mid 17th century; earliest use found in Thomas Browne (1605–1682), physician and author. From classical Latin papāver poppy (of unknown origin) + -ous.