A.yawn, gape, ὁπόταν χασμᾷ when you are gaping, Ar.Eq.824 (anap.), cf. Hp.Mochl.4, Arist.GA719a19, Porph.Abst.1.28, etc.; “οἱ τοὺς χασμωμένους ὁρῶντες” Pl.Chrm.169c; “ἰλιγγιᾶν καὶ χ.” Id.Grg.486b, 527a; of a door, “τῆς θύρας χασμωμένης” Alex.257.
χασμ-άομαι ,