Definition of racket-tail in English:

1A South American hummingbird with long racket-shaped tail feathers.

Genera Ocreatus and Loddigesia, family Trochilidae: two species

1. 1.1 Any of a number of other birds, in particular certain parrots, drongos, and motmots, with racket-shaped tails.
   有球拍形尾巴的其他鸟（尤指某些鹦鹉、卷尾和翠鴗等）