'Thornbill' definitions:

Definition of 'thornbill'

From: WordNet
noun
Any of various South American hummingbirds with a sharp pointed bill

Definition of 'Thornbill'

From: GCIDE
  • Thornbill \Thorn"bill`\, n. (Zool.) Any one of several species of small, brilliantly colored American birds of the genus Rhamphomicron. They have a long, slender, sharp bill, and feed upon honey, insects, and the juice of the sugar cane. [1913 Webster] [1913 Webster]