νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
Ar. μασχάλη, ἡ.
under the arm-pit: Ar. and P. ὑπὸ μάλης (Plato).