porcelain crab
noun
1- a marine crablike crustacean with long antennae, related to the hermit crabs瓷蟹。
1.1
- Porcellana and other genera, superfamily Galatheoidea.瓷蟹属及其他属, 铠甲虾总科。
词源
mid 19th cent.: so named because of its smooth and polished shell.