διασφάξ · diasphax — LSJ
any opening made by violence, rent, gorge, cleft
any opening made by violence, rent, esp. gorge, through which a river runs, Hdt. 2.158 (pl.), 3.117, etc.; cleft in the earth, Lyc. 317.
2 divisions, fissure
Medic., of divisions of blood-vessels, Hp. Loc.Hom. 3; fissure in the liver, Herophil. ap. Gal. 2.570.
3 sluice
sluice, POxy. 1188.24 (i A. D.).
II gill-cavity
gill-cavity, in fishes, Opp. H. 1.744.
2
= τὸ θῆλυ μόριον, Eust. 897.60.