- any of several wasps, as the mud dauber, that construct a nest of mud.
Origin of mud wasp
An Americanism dating back to 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mud wasp
This is the Mud-wasp at work, building a strong mud-nest for her family.
The grub was sound asleep, and would have come out next spring, as a big steel-blue Mud-wasp had I let him alone.
If you look under the roof of any wooden barn in Eastern America you are likely to see the nest of the common Mud-wasp.