Where does “eptagonu” come from?

eptagonu (Maltese) comes from Italian eptagono, from Italian -gono, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

eptagonu (Maltese): heptagon

Definitions

heptagon

Ancestry of “eptagonu”, step by step

Step	Language	Word	Meaning
1	Italian	eptagono	Alternative form of ettagono
2	Italian	-gono	-gon
3	Ancient Greek	γωνία	corner, angle; joiner's square; cornerstone
4	Ancient Greek	γόνυ	knee
5	Proto-Hellenic	gónu	knee
6	Proto-Indo-European	ǵónu	knee

Every word from Proto-Indo-European ǵónu →Every word from Proto-Hellenic gónu →Every word from Ancient Greek γόνυ →