A.= πλευρόν, rib, rare in sg., “βοὸς π.” Hdt.4.64; “παρὰ τὴν π. ἑκάστην” Arist.HA513b29: pl., ribs, Id.PA654b35.
2. pl., generally, side of a man or animal, “ἄλλοτ᾽ ἐπὶ πλευρὰς κατακείμενος, ἄλλοτε δ᾽ αὖτε ὕπτιος” Il.24.10; of both sides, “ἀνὰ πλευράς τε καὶ ὤμους” 23.716; “οὐρῇ δὲ πλευράς τε καὶ ἰσχία ἀμφοτέρωθεν μαστίεται” 20.170, cf. Hes.Sc.430, A.Pr.71, Eu.843 (lyr.): sg., also, of one side, S.OC1260, Aj.834, etc.; a side of beef, etc., PCair.Zen.381.5 (iii B.C., written πλερά): the pl. form is v.l. in E.Hec.826.
II. side, of things and places, “νηὸς πλευραί” Thgn.513; “χωρίου” Pl.Sis.388e; [Πακτωλοῦ] D.P. 833; of an army, “αἱ π. τοῦ πλαισίου” X.An.3.4.22, cf. 28, Plu.Mar. 25, etc.; “παρὰ π. τινὶ εἶναι” Plb.5.26.6; παρὰ π., opp. κατὰ κεφαλήν, IG22.463.72
b. side of a rectangle, ib.36c: hence, one factor of any product, Id.Tht.148a, Arist. Metaph.1051a26, Euc.7 Def.17, etc.
c. side of a square of cube, and root of a square of cubic number, Id.8.11, 12, Theol.Ar.11; κυβικὴ π. cube root, Ph.Bel.52.4.
d. generator of a cone or cylinder, Archim.Sph.Cyl.1.8, 12.