Same entry, according to Adler, in the Ambrosian Lexicon. Hesychius alpha1331 supplies the glossing that is lacking here: a)ei\ diame/nwn, a)eiqalh/s "always waiting, evergreen".
The word is attested in Sophocles, Cratinus (quoted by Hesychius, above), and elsewhere; see LSJ s.v. at web address 1 below.