Where does “चक्कु” come from?

चक्कु (Nepali) comes from Hindi चाकू, from Classical Persian چَاقُو, from Persian چاکو, from Middle Persian ckwc, from Avestan 𐬗𐬀𐬐𐬎𐬱, from Proto-Indo-European keku- — cudgel, hammer shaped stick.

चक्कु (Nepali): knife

Definitions

knife

Ancestry of “चक्कु”, step by step

Step	Language	Word	Meaning
1	Hindi	चाकू	knife
2	Classical Persian	چَاقُو	—
3	Persian	چاکو	—
4	Middle Persian	ckwc	hammer
5	Avestan	𐬗𐬀𐬐𐬎𐬱	battle-axe
6	Proto-Indo-European	keku-	cudgel, hammer shaped stick

Every word from Proto-Indo-European keku- →Every word from Avestan 𐬗𐬀𐬐𐬎𐬱 →Every word from Middle Persian ckwc →