A type of clothing made from wool, specifically designed to be worn under other garments.

ऊनी अंतर्वस्त्र

English Usage: He wore a pair of woollen underpants to keep warm in the winter.

Hindi Usage: उसने सर्दियों में गर्म रहने के लिए ऊनी अंतर्वस्त्र पहने।