The headword, evidently extracted from somewhere, is the aorist active participle, masculine nominative singular, of the verb blw/skw, I go, I come; see LSJ s.v., and other forms at mu 1192 and mu 1200. The aorist form derives from the verb's root stem, mol-; see Cunliffe s.v. blw/skw. Latte on Hesychius mu1597 claims the headword as quoted from Homer, Iliad 11.173, but there are numerous alternatives, including Euripides, Heracles 531-2 (web address 1), where the headword and the first gloss appear. [Less likely is King Leonidas' famously defiant response to Xerxes' demand that the Spartans at Thermopylae lay down their arms: molw\n la/be, "come and get them"; this occurs in sources probably too obscure for the Suda to have mined -- such as Plutarch, Moralia 225C -- rather than e.g. Herodotus.]
[1] Both glossing participles are from the verb e)/rxomai, I go, I come (see LSJ s.v.); the first gloss is the same form as the lemma, but the second is the perfect active participle, masculine nominative (and vocative) singular. The headword is identically glossed in the Synaogoge, Photius' Lexicon (mu512 Theodoridis), and Lexica Segueriana 303.5; cf. Hesychius mu1597 (above). Adler cites scholion D to Homer, Iliad 6.286 (web address 2), which has instances of the feminine form of the headword (molou=sa) and the first gloss (e)lqou=sa).