Where does “narina” come from?

narina (Portuguese) comes from Vulgar Latin narina, from Latin nāris, from Latin nāsus, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

narina (Portuguese): nostril

Definitions

nostril

Ancestry of “narina”, step by step

Step	Language	Word	Meaning
1	Vulgar Latin	narina	—
2	Latin	nāris	nostril
3	Latin	nāsus	The nose
4	Latin	-ō	suffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
5	Proto-Indo-European	-ō	Derives nouns from roots

Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Latin nāsus →