from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various sawflies of the family Siricidae, the female of which has a long stout ovipositor.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The wood wasp.
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of family (Uroceridæ) of large hymenopterous insects, allied to the sawflies. The larvæ bore in the wood of trees. So called from the long, stout ovipositors of the females.
from The Century Dictionary and Cyclopedia
- n. A terebrant hymenopterous insect of the family Uroceridæ; a tailed wasp: so called from the prominent horn at the end of the abdomen of the male. It is related to the saw-fly. See Sirex and Urocerus.
I thanked her and got a glass and a mailing envelope and scooted the soi-disant pigeon horntail into captivity.
Using the term 'wasp' in a broader sense, the horntail/great wood-wasp Urocerus gigas is certainly larger, and I think there are even larger species of parasitic wasps in other parts of Europe.
Buckbeek, Aragod, horntail dragon, centaurs were represented very well (I know my spelling is bad).