τεῖχος τεῖχος, ος, εος, τό, a wall, esp. a wall round a city, town-wall, in sg. and pl., Hom.; τειχέων κιθῶνες coats of walls, i. e. walls one within the other, Hdt.; τεῖχος ἐλαύνειν, δέμειν Il., etc.; οἰκοδομεῖν Hdt.; τ. περιβάλλεσθαι moenia sibi circumdare, Hdt.; also, τ. περιβάλλεσθαι τὴν πόλιν Hdt.; τ. ῥήξασθαι to breach the wall, Il.; so in Prose, τ. καθαιρεῖν, κατασκάπτειν Hdt., etc. τὰ μακρὰ τείχη at Athens were lines of wall connecting the city-wall with the harbours, called respectively τὸ βόρειον or Peiraic, and τὸ νότιον or Phaleric wall.— τεῖχος, τείχη differ from τοῖχος, as Lat. murus, moenia from paries, city-walls from a house-wall; cf. τειχίον. any fortification, a castle, fort, Hdt.: pl. of a single fort, fortifications, Hdt. a fortified town, Hdt., Xen., etc.; so in pl. deriv. uncertain