வட்டம் (Tamil) comes from Maharastri Prakrit 𑀯𑀝𑁆𑀝, from Sanskrit वृत्त, from Sanskrit वृत्, from Sanskrit अन, from Sanskrit अन्, from Proto-Indo-European h₂enh₁‑ — to breathe.
வட்டம் (Tamil): circle, ring, halo