membrānŭla, ae, f. dim. [membrana], a little skin or membrane.
I Lit.: membranula, quae sub cute calvariam cingit, Cels. 8, 4: oculi, membrane of the eye , id. 7, 7, 13. —
II Transf.
A A parchment : iisque imperes, ut sumant membranulam, Cic. Att. 4, 4, b, 1.—
B Plur., an instrument or document written on parchment : quae membranulis meā manu scriptis continebuntur, Dig. 32, 102 prooem.