For the import of the headword see generally LSJ s.v. logga/sia (sic), a neuter plural: "stones with holes in them, through which mooring cables were passed". For this see Hesychius lambda1193 Photius lambda370 Theodoridis, and Glossarium Italioticum 32 Kassel-Austin. The Suda's headword loggw=nos appears to be the genitive singular of a synonymous noun loggw/n (claimed as a Syracusan word in Etymologicum Genuinum and Etymologicum Magnum); note, however, that such a genitive singular appears only here, and may be in error for the nominative plural loggw=nes in other lexica.
The glossing phrase presents problems of its own. Its final word, transmitted as klime/nos, might be something like "called"; alternatively it is a foreshortening of keklime/nos (cf. kappa 1246); but Adler's apparatus flags up attempts by Hemsterhuys and others to explain it as a garbling of a word or phrase involving limh/n (lambda 544).