ἀποσχίζω

1. to split or cleave off , (Odyssey by Homer)

2. to sever or detach from , τινὰ ἀπό τινος (Herdotus Historicus):—;Pass., ἀποσχισθῆναί τινος to be separated from . . ., (Herdotus Historicus); of a river, to be parted from the main stream, (Herdotus Historicus); of a tribe, to be detached from its parent stock, (Herdotus Historicus)

3. metaphorically, ἀπ. τινὰ τοῦ λόγου to cut him off from his speech, interrupt him in it, (Aristophanes Comicus) (ML)