- Gouldia Popelairii
- Thorntail Thorn"tail`, n. (Zo["o]l.) A beautiful South American humming bird ({Gouldia Popelairii}), having the six outer tail feathers long, slender, and pointed. The head is ornamented with a long, pointed crest. [1913 Webster]
The Collaborative International Dictionary of English. 2000.