Where does “Minorca” come from?

Minorca (Portuguese) comes from Latin Minorca, from Latin minor, from Latin minae, from Proto-Italic *eksmenā.

Ancestry of “Minorca”, step by step

Step	Language	Word	Meaning
1	Latin	Minorca	—
2	Latin	minor	comparative degree of parvus; lesser, inferior,...
3	Latin	minae	projecting points, pinnacles, battlements,...
4	Proto-Italic	*eksmenā	—