שַׁבְּלוּלְיָה, (preced. art.) a species of mollusks, slug. Y. Nidd. III, 50ᵈ אילין נשייא דאמרן ש׳ דכר שבלולה נוקבא וכ׳ (ed. Krot. שכ׳, corr. acc.) we do not rely on those women who say that if the placenta resembles (in substance and color) a shabb’luliah, it indicates a male fœtus, if a shabb’lul, a female.