The Collaborative International Dictionary of English v.0.48:

Racket-tail \Rack"et-tail\ (r[a^]k"[e^]t-t[=a]l), n. (Zool.)
   Any one of several species of humming birds of the genus
   Steganura, having two of the tail feathers very long and
   racket-shaped.
   [1913 Webster]