δίκαιρος
From LSJ
ἀναγκαιότεραι μὲν οὖν πᾶσαι ταύτης, ἀμείνων δ᾽ οὐδεμία → accordingly, although all other sciences are more necessary than this, none is more excellent (Aristotle, Metaphysics A 983a10)
Spanish (DGE)
-ου, ὁ orn. ave de la India no identificada y tb. llamada δίκαιος, quizá el Scarabaeus sacer L., cuyos excrementos producen una muerte dulce, parecida al sueño, Ctes.45.34, Ael.NA 4.41.