διὰ λαμπροτάτου βαίνοντες ἁβρῶς αἰθέρος → passing lightly through clear-shining air (Euripides, Medea 829)
probably from גַּלְעֵד; Gilad, a region East of the Jordan; also the name of three Israelites: Gilead, Gileadite.
