protective covering

Noun (2)

1. a covering that is intend to protect from damage or injury“they had no protection from the fallout”“wax provided protection for the floors”Synonyms: protective coverprotectionType of coveringKinds roof, mulch, blind, cold frame, shelter, shield, shade, armor, binding, sheath +26 more
2. the tough natural covering of some organismsType of body coveringKinds armor, scute, clypeus, sclerite