Garment for the lower half of the body worn by men in southern India (Tamil Nadu, Kerala etc.).  An un-stitched rectangular piece of cloth, often white is wrapped around the waist, like a sarong.  Similar garments in north India are called dhotis or lungis.

Here is a link to how to wear one.

For more information: https://www.youtube.com/shorts/LtrVGvD6Ono