Where does “Dako” come from?

Dako (Esperanto) comes from Bengali ঢাকা, from Prakrit 𑀠𑀓𑁆𑀓𑀇 — to shut, close.

Ancestry of “Dako”, step by step

Step	Language	Word	Meaning
1	Bengali	ঢাকা	covered
2	Prakrit	𑀠𑀓𑁆𑀓𑀇	to shut, close