cuticle

n. skin which surrounds the fingernails and toenails; epidermis, outer layer of skin; cuticula, hard outer shell of some insects (Entomology)

In biology, the term cuticle or cuticula is given to a variety of tough but flexible, non-mineral outer coverings of an organism, or part of an organism, that provide protection. They are non-homologous, differing in their origin, structure and chemical composition. In zoology, the invertebrate cuticle or cuticula is a multi-layered structure outside the epidermis of many invertebrates, notably roundworms and arthropods, in which it forms an exoskeleton. The main structural components of the nematode cuticle are proteins, highly cross-linked collagens and specialised insoluble proteins known as "cuticlins", together with glycoproteins and lipids. .
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Noun
1. the outer layer of the skin covering the exterior body surface of vertebrates
(synonym) epidermis
(hypernym) stratum
(hyponym) mantle, pallium
(part-holonym) skin, tegument, cutis
(part-meronym) epidermal cell
2. hard outer covering or case of certain organisms such as arthropods and turtles
(synonym) carapace, shell
(hypernym) exoskeleton
(hyponym) cuticula
(part-holonym) mollusk, mollusc, shellfish
(substance-meronym) shell

(n.)
The scarfskin or epidermis. See Skin.
  

(n.)
The outermost skin or pellicle of a plant, found especially in leaves and young stems.
  

(n.)
A thin skin formed on the surface of a liquid.
  

n.
1. epidermis
جھلي, چمڑا, پوست
2. (Bot.)
بکل, چھلکا, چھال, پوست