Where does “colcha” come from?

colcha (Old Portuguese) comes from Latin culcita, from Proto-Indo-European kʷel- — to turn.

Ancestry of “colcha”, step by step

Step	Language	Word	Meaning
1	Latin	culcita	mattress, pillow, cushion
2	Proto-Indo-European	kʷel-	to turn

colcha — Etymology, Origin & Word History | Etymology Explorer