Where does “ċavi” come from?

ċavi (Maltese) comes from Sicilian chiavi, from Latin clāvis, from Ancient Greek κλείς, from Proto-Hellenic klāwī́ds, from Proto-Indo-European kleh₂u- — nail, pin, hook - instruments, of old use for...

ċavi (Maltese): keystone

Definitions

keystone

Ancestry of “ċavi”, step by step

Step	Language	Word	Meaning
1	Sicilian	chiavi	a key
2	Latin	clāvis	a key
3	Ancient Greek	κλείς	Something used to lock/unlock: key, bolt, bar; A...
4	Proto-Hellenic	klāwī́ds	—
5	Proto-Indo-European	kleh₂u-	nail, pin, hook - instruments, of old use for...

Every word from Proto-Indo-European kleh₂u- →Every word from Proto-Hellenic klāwī́ds →Every word from Ancient Greek κλείς →