वम्vam
टुवम्अ उद्गिरणे
1P, (घट्-आदि वा (when it doesn't come after an upendra), ज्वल्-आदि)
to vomit
this dhātu would normally always be a ghaṭ-ādi by the phrase अम्-अन्तश् च, but gaṇa-sūtra limits that by saying that it is only optionally a ghaṭ-ādi when it doesn't come after an upendra, though it is always a ghaṭ-ādi when it comes after an upendra ।