featherback / ˈfɛð ərˌbæk /

📖毕业后词汇羽绒服羽毛背羽扇纶巾羽翼鸟

featherback 的定义

n. 名词 noun
  1. any freshwater fish of the family Notopteridae, of Asia and western Africa, having a small, feathery dorsal fin and a very long anal fin extending from close behind the head to the tip of the tail.