The headword, evidently extracted from somewhere, is the present indicative active, third person singular, of the verb moxqe/w, I weary with toil; see LSJ s.v. and cf. mu 1308, mu 1309, mu 1310, mu 1311.
[1] The gloss is the present indicative active, third person singular, of the verb kakopaqe/w, I am in distress; see LSJ s.v. The headword is identically glossed in Photius' Lexicon (mu561 Theodoridis), Hesychius mu1760, and Lexica Segueriana 304.4; cf. ps.-Zonaras 1373.11.
[2] Quotation unidentifiable. (Note, however, that one part of it, polla\ moxqh/santes, was apparently proverbial: so Lucian, Hermotimus 69; and cf. e.g. Polybius 1.54.7, Diodorus Siculus 5.39.2.) For the Celts, see generally kappa 1307 and OCD(4) s.v.
[3] See LSJ s.v. for this poetic synonym.