Where does “cavo” come from?

cavo (Portuguese) comes from Portuguese cavar, from Latin cavare, from Latin cavus, from Proto-Italic kawos, from Proto-Indo-European ḱowh₁ós, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

cavo (Portuguese): first-person singular present indicative of cavar

Definitions

first-person singular present indicative of cavar

Ancestry of “cavo”, step by step

Step	Language	Word	Meaning
1	Portuguese	cavar	to dig, excavate, burrow, scoop
2	Latin	cavare	present active infinitive of cavō; second-person...
3	Latin	cavus	hollow, concave; excavated, channeled;...
4	Proto-Italic	kawos	—
5	Proto-Indo-European	ḱowh₁ós	hollow
6	Proto-Indo-European	ḱewh₁-	to swell; to be strong

Every word from Proto-Indo-European ḱewh₁- →Every word from Proto-Indo-European ḱowh₁ós →Every word from Proto-Italic kawos →