What does onīros mean in Latin?

onīros, a noun, means “The wild poppy”.

What is the genitive of onīros?

The genitive singular is onīrī. onīros is masculine, second declension.

In classical Latin, [ɔˈniː.rɔs]; in ecclesiastical (church) Latin, [oˈniː.ros].

noun · masculinesecond declension

onīros m (genitive onīrī)

Classical[ɔˈniː.rɔs]Ecclesiastical[oˈniː.ros]

ŏnīros, i, m., = ὄνειρος (dream),

I. the wild poppy, so called from its soporific qualities, App. Herb. 53.

Borrowed from Ancient Greek ὄνειρος (óneiros, “dream”), due to its soporific qualities.