Both of the words presented and glossed here are related to le/sxh (lambda 308, lambda 309); the glossing -- also, according to Adler, in the Ambrosian Lexicon -- interprets both of them surprisingly harshly. See also omicron 343.
[1] Rare word, quoted perhaps from [Plato], Axiochus 369D (where it appears in the genitive case).
[2] Manuscripts of the Suda read lesxhno/ths or lesxhni/ths, but on the basis of Theognostus and the Ambrosian Lexicon Bernhardy proposed (and Adler adopted) the reading lesxhnw/ths (best attested as Diogenes Laertius' favoured word for a philosopher's pupil: 1.43, 2.4-5).