egger

from The Century Dictionary.

• noun One who makes a business of collecting eggs, as of birds or turtles.
• noun One who eggs, urges, or incites: usually with on.
• noun In entomology, a reddish-brown moth of either of the genera Lasiocampa and Eriogaster: as, the oak-egger, L. quercus; the grass-egger, L. trifolii; the small egger, E. lacustris.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who gathers eggs; an eggler.
• noun One who eggs or incites.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One who gathers eggs.
• noun Any of various species of moth, especially the oak egger-moth, Bombyx quercus.
• noun One who eggs or incites.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun moth having nonfunctional mouthparts as adults; larvae feed on tree foliage and spin egg-shaped cocoons