kavaca {as} , {am} m. n. (3. {ku} Un2. iv , 2 Nir. v , 25) g. {ardharcAdi} , armour , cuirass , a coat of mail any covering ; a corset , jacket bark , rind m. a war-drum , a kettle-drum {am}) n. a piece of bark or birch-leaf or any substance inscribed with mystical words and carried about as an amulet , any amulet , charm W. ; a mystical syllable (such as {hum} , or {hUm}) forming part of a Mantra used as an amulet [cf. {bIja}] m. the tree Oldenlandia herbacea the tree Hibiscus Populneoides