Where does “potrillo” come from?

potrillo (Spanish) comes from Spanish potro, from Vulgar Latin pulliter, from Latin pullus, from Proto-Indo-European polHwós, from Proto-Indo-European pelH- — pale, gray.

potrillo (Spanish): male foal

Definitions

male foal

Ancestry of “potrillo”, step by step

potrillo traces back through two separate lines of ancestry.

via Spanish potro

Step	Language	Word	Meaning
1	Spanish	potro	stallion; colt, foal; rack
2	Vulgar Latin	pulliter	—
3	Latin	pullus	A young animal; darling; dark-colored; dusky
4	Proto-Indo-European	polHwós	pale, gray
5	Proto-Indo-European	pelH-	pale, gray

via Old Spanish potriello

Step	Language	Word	Meaning
1	Old Spanish	potriello	male foal
2	Old Spanish	potro	—

Every word from Proto-Indo-European pelH- →Every word from Proto-Indo-European polHwós →Every word from Latin pullus →