Where does “cerco” come from?

cerco (Galician) comes from Old Portuguese cerco, from Latin circus, from Ancient Greek κρίκος, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

cerco (Galician): circle; siege; purse seine

Definitions

circle; siege; purse seine

Ancestry of “cerco”, step by step

Step	Language	Word	Meaning
1	Old Portuguese	cerco	circle
2	Latin	circus	a circular line or orbit; circle, ring; a...
3	Ancient Greek	κρίκος	ring
4	Proto-Indo-European	(s)ḱer-	dung, manure, filth; manure, dung, filth

Every word from Proto-Indo-European (s)ḱer- →Every word from Ancient Greek κρίκος →Every word from Latin circus →