σκῐό-εις · skio-eis — LSJ
shady, shadowy, shady, thickly wooded, dark
shady, shadowy, οὔρεα, ὄρεα σ., shady, i.e. thickly wooded, mountains, Il. 1.157, Od. 7.268, Pi. P. 9.34; μέγαρα σ. dark chambers, Od. 1.365, 4.768; ὄρθρον ὑπὸ σκιόεντα the morning twilight, Tryph. 236.
2 overshadowing
Act., νέφεα σ. overshadowing clouds, Il. 5.525, Od. 8.374, etc.
II unsubstantial
unsubstantial, of a reflection in a mirror, and of the shadow on a sun-dial, τύπος AP 6.20 (Jul.), 9.807; κέρδος ὀνείρου ib. 11.366 (Maced.).