Liddell–Scott–Jones: διαύγ-εια

διαύγ-εια,ἡ,=foreg., Philostr. Im. 2.1 , Them. Or. 13.175a , etc.

2. translucency,

Plu. 2.914b , Hierocl. CA 26p.480M. : metaph. of sayings,clarity,

Plu. 2.408e .

II. hole to admit light,

D.S. 17.82 ;peephole,

Procl. Hyp. 3.25 .