1. anything projecting, a headland, promontory , (Sophocles Tragicus)

2. anything put before one, a fence, barrier, screen , (Herdotus Historicus), attic; πρ. σώματος, of a shield, (Aeschulus Tragicus); προβλήματα ἵππων χαλκᾶ the brasen armour of horses, (Xenophon Historicus)

3. with genitive a defence against a thing, πέτρων (Aeschulus Tragicus); χείματος (Euripides); κακῶν (Aristophanes Comicus)

4. πρ. φόβου ἢ αἰδοῦς ἔχειν to have fear or shame as a defence , (Sophocles Tragicus)

5. anything put forward as an excuse or screen , (Demosthenes Orator); so, πρ. λαβεῖν τινά (as we say) to make a stalking horse of him, (Sophocles Tragicus)

6. that which is proposed, a task, business , (Euripides)

7. a problem in Geometry, (Plato Philosophus) (ML)