Where does “தலைவர்” come from?

தலைவர் (Tamil) comes from Tamil தலை, from Proto-Dravidian *talay — head.

Ancestry of “தலைவர்”, step by step

StepLanguageWordMeaning
1Tamilதலைhead
2Proto-Dravidian*talayhead
Every word from Proto-Dravidian *talay →Every word from Tamil தலை →