Where does “মাচ্ছি” come from?

মাচ্ছি (Old Bengali) comes from Sanskrit मक्षिका, from Sanskrit मक्षि.

Ancestry of “মাচ্ছি”, step by step

Step	Language	Word	Meaning
1	Sanskrit	मक्षिका	a fly, bee
2	Sanskrit	मक्षि	—

Words derived from “মাচ্ছি”

masí

Every word from Sanskrit मक्षि →Every word from Sanskrit मक्षिका →