Where does “cunero” come from?

cunero (Spanish) comes from Spanish cuña, from Old Spanish cuna, from Latin cūna, from Proto-Italic koinā, from Proto-Indo-European ḱoy-no-, from Proto-Indo-European ḱey- — to be lying down; to settle.

cunero (Spanish): of unknown or unstated origin

Definitions

of unknown or unstated origin

Ancestry of “cunero”, step by step

Step	Language	Word	Meaning
1	Spanish	cuña	wedge; chock; quoin
2	Old Spanish	cuna	—
3	Latin	cūna	a crib (for infant)
4	Proto-Italic	koinā	—
5	Proto-Indo-European	ḱoy-no-	hay; lair, cradle
6	Proto-Indo-European	ḱey-	to be lying down; to settle

Every word from Proto-Indo-European ḱey- →Every word from Proto-Indo-European ḱoy-no- →Every word from Proto-Italic koinā →