οὐρανίσκος
From LSJ
αἰθὴρ δ᾽ ἐλαφραῖς πτερύγων ῥιπαῖς ὑποσυρίζει (Aeschylus, Prometheus Bound 126) → The bright air fanned | whistles and shrills with rapid beat of wings.
English (LSJ)
ὁ, Dim. of οὐρανός,
A a little heaven or sky: hence, I vaulted ceiling, esp. top of a tent, canopy, Callix.2, Phylarch.41 J., Plu.Alex.37, Phoc.33. II roof of the mouth, Sor.2.62, Gal.UP11.10, Ath.7.315d, v.l. in Arist.Pr. 963a2. III a constellation of the southern hemisphere, Corona Australis, Sch.Arat.400.