πλευραί

From LSJ

ὄρνιθι γὰρ καὶ τὴν τότ᾽ αἰσίῳ τύχην παρέσχες ἡμῖν → for it was by a good omen that you provided that past fortune to us

Source

English (Slater)

πλευραί ribs ἤλασε Λυγκέος ἐν πλευραῖσι χαλκόν (N. 10.70) τέλος δ' ἀείραις πρὸς στιβαρὰς ἐπάραξε πλευράς (sc. Ἀνταῖον: i. e. against his own ribs?) fr. 111. 4.