μονόχορδος
From LSJ
Ὁ δὲ μὴ δυνάμενος κοινωνεῖν ἢ μηδὲν δεόμενος δι' αὐτάρκειαν οὐθὲν μέρος πόλεως, ὥστε ἢ θηρίον ἢ θεός → Whoever is incapable of associating, or has no need to because of self-sufficiency, is no part of a state; so he is either a beast or a god
English (LSJ)
ον, (χορδή)
A with or of but one string, κανών Ptol.Harm.1.8 tit.: μονόχορδον, τό, monochord, Poll.4.60, Nicom.Harm.4, Iamb.VP26.119.
