ὀρθόδωρον
From LSJ
οὗτος ἐγὼ ταχυτᾶτι· χεῖρες δὲ καὶ ἦτορ ἴσο → this is my speed: my hands and heart are its equal, such am I for speed; my hands and heart are just as good
English (LSJ)
τό, (δῶρον II)
A the length from the wrist to the finger-ends, = σπιθαμή, Hsch., cf. Poll.2.157. II = membrum erectum, PLond. 1821.166.
German (Pape)
[Seite 374] τό, die Länge von der Vorderhand, καρπός, bis zu den Fingerspitzen (vgl. δῶρον), Poll. 2, 157.
Greek (Liddell-Scott)
ὀρθόδωρον: τό, (δῶρον ΙΙ) «μέτρον τὸ ὀρθὸν τῆς χειρὸς ἀπὸ ἄκρου τοῦ καρποῦ μέχρι τοῦ δακτύλου· οἱ δὲ σπιθαμὴν» Ἡσύχ. - Κατὰ Πολυδ. Β΄, 157, «τὸ δὲ ἀπὸ τοῦ καρποῦ ἕως ἄκρων δακτύλων, ἡ πᾶσα χείρ, ὀρθόδωρον».