Where does “amoreira” come from?

amoreira (Portuguese) comes from Portuguese -eira, from Old Portuguese -eira, from Latin -āria, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

amoreira (Portuguese): mulberry (tree)

Definitions

mulberry (tree)

Ancestry of “amoreira”, step by step

Step	Language	Word	Meaning
1	Portuguese	-eira	female equivalent of -eiro; feminine of -eiro
2	Old Portuguese	-eira	—
3	Latin	-āria	used to form feminine counterparts of masculine agent nouns in
4	Latin	-ārius	er
5	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Latin -āria →