Where does “ĉapo” come from?

ĉapo (Esperanto) comes from Polish czapka, from French chape, from Old French chape, from Latin cāppa, from Latin caput, from Proto-Italic kaput, from Proto-Indo-European káput, from Proto-Indo-European kap- — to seize, hold.

ĉapo (Esperanto): cap; bonnet

Definitions

cap; bonnet

Ancestry of “ĉapo”, step by step

Step	Language	Word	Meaning
1	Polish	czapka	cap
2	French	chape	cape, cloak; cope, cappa; gin block
3	Old French	chape	cape
4	Latin	cāppa	cape, cloak
5	Latin	caput	head; headlike protuberance on an organ or body...
6	Proto-Italic	kaput	head
7	Proto-Indo-European	káput	head
8	Proto-Indo-European	kap-	to seize, hold

Every word from Proto-Indo-European kap- →Every word from Proto-Indo-European káput →Every word from Proto-Italic kaput →