a natural object that covers or envelops

覆うか包む自然の物体

the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs

多くの動物（特に無脊椎動物）の外部の保護または支持構造や殻で、骨や角質の部位（爪や鱗、蹄など）を含む

the muscle and aponeurosis and skin covering the cranium

頭蓋を覆う筋肉、腱膜および皮膚

a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss

体（またはその一部）を覆う、糸状構造が密集して成長する被覆物（人の頭の上など）；熱の損失を防ぐのに役立つ

cast-off skins or coverings of various organisms during ecdysis

脱皮時にさまざまな生物が脱ぎ捨てる皮や殻

the tough natural covering of some organisms

ある生物の頑丈な自然の覆い

layer of cells that secretes the chitinous cuticle in e.g. arthropods

例えば節足動物でキチン質の表皮を分泌する細胞の層