1. ἤτριον · ētrion — Beekes
ἤτριον [n.] ‘warp’ (PL, E., Theoc.). > *VAR ἄτριον Theoc. 18, 33 (better -iov?). *ETYM For the formation, cf. Apiov. Semantically, connection with » ἄττομαι ‘set the warp in the loom’ is probable; cf. the derivatives dopa, δίασμα with related meaning. It is difficult to give a precise derivational model, however. The word » ἐπήτριμοι ‘closely woven, thronged’ perhaps also belongs here. — [Beekes, s.v. ἤτριον, p. 574]