From Longman Dictionary of Contemporary Englishintegumentin‧teg‧u‧ment /ɪnˈteɡjəmənt/ noun [countable] technical HBsomething such as a shell which covers something else
Examples from the Corpus
integument• He keeps fat in the limpid integument Reflections live on.Origin integument (1600-1700) Latin integumentum, from tegere “to cover” 