membrane

A thin, pliable layer of tissue covering surfaces or separating or connecting regions, structures, or organs of a living organism.

A semipermeable layer that bounds a cell or an organelle, typically consisting of lipids and proteins.

A thin, pliable sheet or layer of natural or synthetic material.

A piece of parchment.

A thin sheet of natural or synthetic material that is permeable to substances in solution.

A thin pliable expansive structure of the body; an expansion of any soft tissue or part in the form of a sheet or layer, investing or lining some other structure or connecting two or more structures.

In entomology, specifically, the membranous terminal part of a hemielytrum; the membrane of the fore wing of a hemipter. See cut under clavus.

A skin prepared for being written on.

A thin layer or fold of tissue, usually supported by a fibrous network, serving to cover or line some part or organ, and often secreting or absorbing certain fluids.