Where does “saku” come from?

saku (Latvian) comes from Latvian sakas, from Proto-Indo-European ḱak-, from Proto-Indo-European kek- / ḱek- / kekʰ- / ḱekʰ-.

saku (Latvian): 1st person singular present indicative form of...

Definitions

Step	Language	Word	Meaning
1	Latvian	sakas	collar
2	Proto-Indo-European	ḱak-	branch, pole; branch, stick; to be able, help
3	Proto-Indo-European	kek- / ḱek- / kekʰ- / ḱekʰ-	—

saku — Etymology, Origin & Word History | Etymology Explorer