[1] The headword is third person singular, present indicative active, of the verb metalleu/w, here used in the sense noted at LSJ s.v., II (= metalla/ssw). Same or similar entry in other lexica (see the references at Photius mu312 Theodoridis); quoted from Wisdom of Solomon 4.12 LXX (where it is used of a change of mind).
[2] See generally LSJ s.v. metalleu/w I.5; and cf. mu 703, mu 704.
[3] Greek Anthology 6.302.5 (Leonidas of Tarentum), Leonidas implores the mice to leave his hut, as there they will find nothing to eat; cf. Gow and Page (vol. I, 119); (vol. II, 347-348); and further extracts from this epigram at alpha 3965, eta 380, kappa 2424, sigma 676, and sigma 698. In this line, the first word should be tw=| (vol. I, 119).