Pichwai.........pich means back and wai means hanging. So it means which is hanged behind the back. It generally depicts cows, lotus, peacocks and idols of lord Shrinath.
Pichhwai are large devotional Hindu painted pictures, normally on cloth, which portray Krishna. They are mainly made to hang in Hindu temples of the Pushtimarg devotional tradition, especially the Shrinathji Temple in Nathdwara, Rajasthan, built around 1672.