what does Papaver somniferum mean?

PAPAVER SOMNIFERUM as NOUN

Meaning
- southwestern Asian herb with grayish leaves and white or reddish flowers
- source of opium
Synonym(s)
- opium poppy (what does opium poppy mean?)
Hypernyms(s) Papaver somniferum is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- poppy (what does poppy mean?)