Same or similar entry elsewhere; see the references at Photius lambda27 Theodoridis.
The headword adjective is cognate with Latin laevus. See LSJ s.v.: "in Hesychius we have lai/ba, i.e. lai/va, = a)spi/s, because borne on the left arm."
[1] (More exactly, "bester", for the term appears to be a comparative formed on the stem of a superlative.) The expression provides a euphemism to avoid an ill-omened direct expression, just as another expression for 'left', eu)w/numos, the 'well-named' side, precisely because it was not. Compare alpha 3901, delta 225, lambda 193, phi 704.
[2] (For this adjective see kappa 1941, and cf. kappa 1942. Earlier lexica have 'h)\ kolo/bion', a short-sleeved tunic, which does not fit here. Theodoridis in his Photius edition [vol.II p.LXIII] identifies koloba/ as a textual emendation made by the Suda lexicographer himself.) In English, at least, clumsiness appears in expressions such as "two left hands/feet".