noun Chiefly North Midland and Western U.S.
Origin of mud wasp
Examples from the Web for mud wasp
This is the Mud-wasp at work, building a strong mud-nest for her family.
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.
The grub was sound asleep, and would have come out next spring, as a big steel-blue Mud-wasp had I let him alone.