ἀμφιμήτωρ
From LSJ
ἡ Νέμεσις προλέγει τῷ πήχεϊ τῷ τε χαλινῷ μήτ' ἄμετρόν τι ποιεῖν μήτ' ἀχάλινα λέγειν → Nemesis warns us by her cubit-rule and bridle neither to do anything without measure nor to be unbridled in our speech
German (Pape)
[Seite 141] nach B. A. 6 ὁ ἐξ ἑτέρας μητρὸς ἀδελφός, also ἀμφιμήτορες Stiefgeschwister, welche denselben Vater haben, Aesch. Heracl. frg. 62; Eur. Andr. 466.