/'tɔ:təʃel; `tɔrtə,ʃɛl/
n
1 [U] hard shell of certain turtles, esp the type with yellow and brown markings, used to make combs, etc 玳瑁壳
*[attrib 作定语] a hairbrush with a tortoiseshell back 背面镶玳瑁的发刷.
2 [C] cat with yellowish-brown markings 有黄棕色花纹的猫.
3 [C] type of butterfly with brownish markings 一种有棕色花纹的蝴蝶.

n
[U]
a hard shiny brown and white material made from the shell of a tortoise
[C]
a cat that has yellow, brown, and black marks on its fur
[C]
a butterfly that has brown and orange wings