INTEG'UMENT, noun [Latin integumentum, intego, to cover; in and tego. See Deck.] That which naturally invests or covers another thing; but appropriately and chiefly, in anatomy, a covering which invests the body, as the skin, or a membrane that invests a particular part. The skin of seeds and the shells of crustaceous animals are denominated integuments.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI