τάχιον

From LSJ

τηλέφαντον κυανέας χθονὸς ἄστρον → far-shining star of the blue land

Source

German (Pape)

[Seite 1075] ονος, compar., u. τάχιστος superl. S. ταχύς.

English (Strong)

neuter singular of the comparative of ταχύς (as adverb); more swiftly, i.e. (in manner) more rapidly, or (in time) more speedily: out (run), quickly, shortly, sooner.