Where does “ساک” come from?

ساک (Persian) comes from Sanskrit वैशाख, from Sanskrit विशाखा, from Sanskrit शाखा, from Proto-Indo-Aryan śā́kʰaH, from Proto-Indo-Iranian ćā́kʰaH, from Proto-Indo-European ḱókh₂eh₂ — branch.

ساک (Persian): sak, ash-e sak, khoreshe sak; a Persian spinach...

Definitions

sak, ash-e sak, khoreshe sak; a Persian spinach...

Ancestry of “ساک”, step by step

ساک traces back through two separate lines of ancestry.

via Sanskrit वैशाख

Step	Language	Word	Meaning
1	Sanskrit	वैशाख	full-moon day in the month of Vaiśākha
2	Sanskrit	विशाखा	the 14th lunar asterism
3	Sanskrit	शाखा	branch; a limb of the body, arm or leg; finger
4	Proto-Indo-Aryan	śā́kʰaH	—
5	Proto-Indo-Iranian	ćā́kʰaH	—
6	Proto-Indo-European	ḱókh₂eh₂	branch

via French sac

Step	Language	Word	Meaning
1	French	sac	bag, sack; ten French francs; plunder, loot
2	Old French	sac	bag; sack
3	Latin	saccus	sack, bag; purse, wallet, moneybag; garment of...
4	Ancient Greek	σάκκος	sack; sackcloth; sackcloth vestment, penitential...

Every word from Proto-Indo-European ḱókh₂eh₂ →Every word from Proto-Indo-Iranian ćā́kʰaH →Every word from Proto-Indo-Aryan śā́kʰaH →