nounDownload🔗ShareA wild plant found in Bengal and Assam, Aeschynomene aspera, having a milky-white, spongy pith used for the manufacture of pith helmets and decorative artefacts.Examples:"The craftsman carefully carved the sola into a delicate flower, showcasing the spongy pith's suitability for decorative work. "plantmaterialbiologyagricultureChat with AIVocabulary GamePractice Reading