Source : Webster's Revised Unabridged Dictionary (1913)

Waxbill \Wax"bill`\, n. (Zo["o]l.)
   Any one of numerous species of finchlike birds belonging to
   {Estrelda} and allied genera, native of Asia, Africa, and
   Australia. The bill is large, conical, and usually red in
   color, resembling sealing wax. Several of the species are
   often kept as cage birds.