Where does “Pena cova” come from?

Pena cova (Portuguese) comes from Old Portuguese cova, from Vulgar Latin cova, from Latin cava, from Latin cavus, from Proto-Italic kawos, from Proto-Indo-European ḱowh₁ós, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

Ancestry of “Pena cova”, step by step

Pena cova traces back through two separate lines of ancestry.

via Old Portuguese cova

StepLanguageWordMeaning
1Old Portuguesecovapit
2Vulgar Latincova
3Latincavanominative feminine singular of cavus; nominative...
4Latincavushollow, concave; excavated, channeled;...
5Proto-Italickawos
6Proto-Indo-Europeanḱowh₁óshollow
7Proto-Indo-Europeanḱewh₁-to swell; to be strong

via Old Portuguese pena

StepLanguageWordMeaning
1Old Portuguesepenarock
2Latinpennawing; feather, especially a flight-feather;...
3Proto-Italicpetnāfeather; wing
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European ḱewh₁-Every word from Proto-Indo-European ḱowh₁ósEvery word from Proto-Italic kawos
Pena cova — Etymology, Origin & Word History | Etymology Explorer