Henry George Liddell, Robert Scott, A Greek-English Lexicon

A.cross-wise, at an angle, esp. at a right angle, as of the cross- streets of Babylon, Hdt.1.180; “ῥύμη ἐ. πρὸς τὴν . . εὐθεῖαν” Plb.6.29.1, cf. 6.30.6; τῆς Σκυθικῆς τὰ ἐ. the country measured along the coast, opp. τὰ ὄρθια (inwards, at right angles to the coast), Hdt.4.101; opp. κατ᾽ ἰθύ, Q.S.5.81: c. gen., τριήρεας . . τοῦ μὲν Πόντου ἐπικαρσίας, τοῦ δὲ Ἑλλησπόντου κατὰ ῥόον forming an angle with the current of the Pontus, but . . , Hdt.7.36; ἐπικάρσιαι σανίδες cross-planks, Plb.1.22.5; “ἐπικάρσιος ἐπείλησις” Sor.Fasc.12.506C.: neut. pl. as Adv., ἐπικάρσια “δὴ προπεσοῦμαι” athwart, Com.Adesp.640. Regul. Adv. -ίως transversely, Antyll. ap. Orib.44.8.2, Paul.Aeg.6.40.

2.. striped, CPR21.19 (iii A.D.), etc.

II.. in Od.9.70 αἱ μὲν [νῆες] ἔπειτ᾽ ἐφέροντ᾽ ἐπικάρσιαι, either (ἐπὶ κάρ), plunging, cf. Eust.ad loc., or (as Sch.) = πλάγιαι, i.e. making leeway, drifting.

III.. Subst. ἐπικάρσιον, τό, striped garment, Ostr.64 (ii A.D.), POxy.921.14 (iii A.D.).