For the meaning "ill-omened" see e.g. Aeschylus, Agamemnon 1155 (accusative plural); and for an instance of the primary headword, masculine, see under alpha 2762.
[1] Can serve as an adjective in the neuter singular and also (as in the instance Adler flags up, at alpha 4112) as a substantive: "thing of ill-omen".