Sense

1. avast!

Examples

• ὠὸπ παραβαλοῦ. (Aristophanes, Frogs, Prologue 6:33)
• εἴδωλα πετεινῶν αἰθεροδρόμων οἰωνῶν ταναοδείρων ‐ ὠόπ. (Aristophanes, Birds, Episode, lyric15)

Source: Henry George Liddell. Robert Scott. "A Greek-English Lexicon". revised and augmented throughout by. Sir Henry Stuart Jones.