名詞 cuticle:

1. the dead skin at the base of a fingernail or toenail
2. the outer layer of the skin covering the exterior body surface of vertebrates
   同義詞：epidermis
3. hard outer covering or case of certain organisms such as arthropods and turtles
   同義詞：carapace, shell, shield

cu.ti.cle

n.（名詞）
The outermost layer of the skin of vertebrates; epidermis.
表皮：脊椎動物皮膚的最外層；表皮
The strip of hardened skin at the base and sides of a fingernail or toenail.
角質層：位于指甲或趾甲基部邊緣的硬化帶狀皮膚
Dead or cornified epidermis.
角質層：死的或角化了的表皮
Zoology The noncellular, hardened or membranous protective covering of many invertebrates, such as the transparent membrane that covers annelids.
【動物學】 護膜：許多非脊椎動物的非細胞的、硬化或膜狀的保護性覆蓋層，如覆蓋節(jié)肢動物的透明膜狀物
Botany The layer of cutin covering the epidermis of the aerial parts of plants.
【植物學】 角質層：覆蓋在植物的氣生部分表皮上的一層角質層

來源：
Latin cutocula [diminutive of] cutis [skin] * see (s)keu-
拉丁語 cutocula [] cutis的小后綴 [皮膚] *參見 (s)keu-

【引伸】
cutic.ular