Where does “உரோமம்” come from?

உரோமம் (Tamil) comes from Old Tamil 𑀉𑀭𑁄𑀫𑀫𑁆, from Sanskrit रोमन्, from Proto-Indo-Aryan *Hráwma.

உரோமம் (Tamil): body hair on humans and animals, fleece, down feathers