πλευρικός
From LSJ
ἔνδον σκάπτε, ἔνδον ἡ πηγή τοῦ ἀγαθοῦ καί ἀεί ἀναβλύειν δυναμένη, ἐάν ἀεί σκάπτῃς → Dig within. Within is the wellspring of Good; and it is always ready to bubble up, if you just dig. | Look within. Within is the fountain of the good, and it will ever bubble up, if thou wilt ever dig.
English (LSJ)
ή, όν,
A of or for the ribs: τὰ π. τῶν βοῶν the sides, Sch. Ar.Eq.361. II π. ἀριθμός number of units in the side of a square, opp. διαμετρικός: μονάς Theol.Ar.3, Iamb. in Nic.p.11 P.
German (Pape)
[Seite 631] zur Seite gehörig, Schol. Ar. Equ. 362.