πρηνής
-ές
[προ- 1 + ἠν-, face. Cf. ἀπηνής, ὑπηνήτης. With the face forward.]
On the face or belly, prone (opposed to ὕπτιος): ἤριπε πρηνής Il. 5.58. Cf. Il. 2.418, Il. 4.544, Il. 7.43, 307, Il. 11.179, Il. 12.396, Il. 15.543, Il. 16.310, 379, 413, 579, Il. 17.300, Il. 21.118, Il. 23.25, Il. 24.11: Od. 5.374, Od. 22.296.
Of inanimate objects, to utter ruin or destruction: πρηνὲς βαλέειν Πριάμοιο μέλαθρον Il. 2.414.