The headword, probably (though not demonstrably) extracted from the quotation given, is accusative (as the first gloss shows) plural of the neuter noun presbei=on; see generally LSJ s.v., and cf. pi 2249 for an alternative sense.
[1] The first gloss is a feminine noun in the accusative plural; see generally LSJ s.v. timh/. The second gloss is a neuter noun in the (nominative, vocative, and) accusative plural; see generally LSJ s.v. ge/ras. An alternative gloss on the lemma is given by Hesychius: kra/th (strengths, mights, powers); see generally LSJ s.v. kra/tos.
[2] Tentatively attributed by Adler to either Aelian or Damascius; now Damascius, Life of Isidore fr. 397 Zintzen. [In her critical apparatus Adler reports that mss. V and (after correction) M transmit me/nei: awaits.]