ἱππούροισιν ἵππουρος, horse-tailed Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: masculine dative plural (morph21) of ἵππουρος Search the corpus for this form only: ἱππούροισιν ἵππουρος Masculine SingularDualPlural Nominative – – – Genitive ἱππούροιο – ἱππούρων Dative – – – Accusative – – – Vocative – – –