Where does “migalla” come from?

migalla (Old Portuguese) comes from Vulgar Latin micacula, from Latin mīca, from Proto-Italic smīkā, from Proto-Indo-European smēyg-, from Proto-Indo-European smē- — to rub; smear.

migalla (Old Portuguese): crumb

Definitions

crumb

Ancestry of “migalla”, step by step

Step	Language	Word	Meaning
1	Vulgar Latin	micacula	—
2	Latin	mīca	a grain, crumb
3	Proto-Italic	smīkā	—
4	Proto-Indo-European	smēyg-	small, delicate, thin; twig, pole; crumb; small,...
5	Proto-Indo-European	smē-	to rub; smear

Every word from Proto-Indo-European smē- →Every word from Proto-Indo-European smēyg- →Every word from Proto-Italic smīkā →