Source : Webster's Revised Unabridged Dictionary (1913)

Sphingid \Sphin"gid\, n. (Zo["o]l.)
   A sphinx.

Sphingid \Sphin"gid\, a.
   Of or pertaining to a sphinx, or the family {Sphingid[ae]}.

Source : WordNet®

sphingid
     n : any of various moths with long narrow forewings capable of
         powerful flight and hovering over flowers to feed [syn: {hawkmoth},
          {hawk moth}, {sphinx moth}, {hummingbird moth}]