- any of various wasplike insects of the family Siricidae, the females of which have a hornlike ovipositor.
Origin of horntail
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of various large wasplike insects of the hymenopterous family Siricidae, the females of which have a strong stout ovipositor and lay their eggs in the wood of felled treesAlso called: wood wasp
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012