BT Qid 72a(39) :ושמתינהו ר׳ אחי בר יאשיה ואישתמוד‏ : PN excommunicated them, so they converted (from Judaism)
See the entire entry for šmd vb. D to excommunicate; C to destroy

BT Qid 72a(39) :ואישתמוד‏ :
See the entire entry for šmd vb. D to excommunicate; C to destroy