Where does “omaro” come from?

omaro (Italian) comes from Translingual Homarus, from French homard, from Middle Low German hummer, from Old Norse humarr, from Proto-Germanic *humaraz — lobster.

Ancestry of “omaro”, step by step

Step	Language	Word	Meaning
1	Translingual	Homarus	genus}}
2	French	homard	lobster
3	Middle Low German	hummer	—
4	Old Norse	humarr	lobster
5	Proto-Germanic	*humaraz	lobster

Every word from Proto-Germanic *humaraz →Every word from Old Norse humarr →Every word from Middle Low German hummer →