Papaver | Webster's Dictionary of the English Language

papaver
păpāver, ĕris, n. (ante-class., m.) [etym. dub.; cf. root pa- of pasco, πέπαμαι], the poppy. I Lit....

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
papaver
papāver eris, n a poppy: soporiferum, V.: Lethaeo perfusa papavera somno, V.: summa papaverum capit...

An Elementary Latin Dictionary