What is the meaning of Cuticle?

The outermost layer of the skin of vertebrates; the epidermis.

The strip of hardened skin at the base and sides of a fingernail or toenail.

Dead or cornified epidermis.

A noncellular protective covering outside the epidermis of many invertebrates and plants.

A thin skin formed on the surface of a liquid.

Source: wiktionary.org