ἔκτομον
From LSJ
ἔνδον γὰρ ἁνὴρ ἄρτι τυγχάνει, κάρα στάζων ἱδρῶτι καὶ χέρας ξιφοκτόνους → yes, the man is now inside, his face and hands that have slaughtered with the sword dripping with sweat
English (LSJ)
τό,
A black hellebore, Hp.Mul.1.78, Thphr.HP9.10.4, Diocl.Fr.151; but, white hellebore, Ps.-Dsc.4.148. II ἔκτομος (sc. λίθος), ὁ, stone forming interior angle, Rev.Phil.29.240 (Didyma), 49.6 (ibid.).
German (Pape)
[Seite 782] τό, schwarzer Helleborus, Theophr.