integument
noun
[ ɪnˈtɛɡjʊm(ə)nt ]
• a tough outer protective layer, especially that of an animal or plant.
• "this chemical compound is found in the integument of the seed"
Origin:
early 17th century (denoting a covering or coating): from Latin integumentum, from the verb integere, from in- ‘in’ + tegere ‘to cover’.
