M / membrānŭla
noun

membrānŭla

gen. membrānŭlae · gender feminine · decl. 1st
a little skin; membrane
a little skin or membrane.
Lit.: membranula, quae sub cute calvariam cingit, Cels. 8, 4: oculi, membrane of the eye, id. 7, 7, 13. —
by extension
A parchment
A parchment: iisque imperes, ut sumant membranulam, Cic. Att. 4, 4, b, 1.—
Plur., an instrument; document written on parchment
Plur., an instrument or document written on parchment: quae membranulis meā manu scriptis continebuntur, Dig. 32, 102 prooem.