Where does “तमिळ” come from?

तमिळ (Marathi) comes from Tamil தமிழ், from Old Tamil 𑀢𑀫𑀺𑀵𑁰.

Ancestry of “तमिळ”, step by step

Step	Language	Word	Meaning
1	Tamil	தமிழ்	Tamil
2	Old Tamil	𑀢𑀫𑀺𑀵𑁰	—