Where does “dojarkowy” come from?

dojarkowy (Polish) comes from Polish dojarka, from Polish -arka, from Polish -arz, from Old Polish -arz, from Proto-Slavic -ařь, from Gothic -𐌰𐍂𐌴𐌹𐍃, from Proto-Germanic -ārijaz, from Latin -ārius — Forms relational adjectives to nouns (and rarely numerals).

dojarkowy (Polish): milking machine

Definitions

milking machine

Ancestry of “dojarkowy”, step by step

Step	Language	Word	Meaning
1	Polish	dojarka	milking machine
2	Polish	-arka	-er
3	Polish	-arz	-er
4	Old Polish	-arz	forms agent nouns
5	Proto-Slavic	-ařь	-er
6	Gothic	-𐌰𐍂𐌴𐌹𐍃	-er
7	Proto-Germanic	-ārijaz	-er
8	Latin	-ārius	er
9	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Every word from Proto-Italic *-āzios →