שִׁבְרָא, (cmp. שַׁבְרִירַיָּא) mullein, a plant the woolly leaves of which are used for wicks (φλόμος λυχνῖτις or θρυαλλίς; v. Löw Pfl., p. 67). Sabb. 20ᵇ, expl. פתילת המדבר (ed. Sonc. שִׁיבְרָא, oth. early ed. שׁוּבְ׳).