Where does “ვაჟა” come from?

ვაჟა (Georgian) comes from Georgian ვაჟი, from Old Georgian ვაჟი — son.

Ancestry of “ვაჟა”, step by step

Step	Language	Word	Meaning
1	Georgian	ვაჟი	son; young man, boy
2	Old Georgian	ვაჟი	son

ვაჟა — Etymology, Origin & Word History | Etymology Explorer