δικέφαλος
From LSJ
νόησε δὲ δῖος Ὀδυσσεὺς σαίνοντάς τε κύνας, περί τε κτύπος ἦλθε ποδοῖιν → godly Odysseus heard the fawning of dogs, and on top of that came the beat of two feet
English (LSJ)
ον,
A two-headed, ib.540b3, GA770a24, Paul.Aeg.3.76; δράκων D.C.50.8.
Greek (Liddell-Scott)
δῐκέφᾰλος: -ον, ὁ δύο κεφαλὰς ἔχων, Ἀριστ. Ἱστ. Ζ. 5.4, π.Ζ. Γεν. 4.4,6.