potter wasp

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various small black and yellow solitary wasps of the genus Eumenes, characteristically building pot-shaped nests of clay. See Regional Note at mud dauber.

Century Dictionary and Cyclopedia

1. n. A wasp of one of the genera Odynerus, Eumenes, etc., which builds mud cells in any convenient cylindrical cavity, such as a hollow reed, an accidentally folded paper, or the hole in a spool. O. flavipes and E. fraterna are good examples.

Wiktionary

1. n. A group of wasps in the subfamily Eumeninae.

GNU Webster's 1913

1. n. (Zoöl.) a small solitary wasp (Eumenes fraternal) which constructs a globular nest of mud and sand in which it deposits insect larvæ, such as cankerworms, as food for its young.
2. n. See under Potter.

WordNet 3.0

1. n. any of various solitary wasps that construct vase-shaped cells of mud for their eggs