(eg) noun
1. A reproductive body containing the germ and the food yolk of birds, insects, reptiles, or fishes, enclosed in a membranous or shell–like covering.
2. In common usage, such a body, especially that of the domestic fowl. See also illustration under EMBRYOLOGY, FROG.
3. The female reproductive cell of animals which, when fertilized, becomes a zygote; an ovum or germ cell.
4. Something like or likened to an egg.
5. Figuratively, that which contains a germ.
—v.t.
1. To mix or cover with eggs.
2. U.S. To pelt with eggs.
—v.i.
3. To collect birds' eggs.
—lay an egg U.S. Slang To fail: said of a play, joke, etc. [<ON]

(eg) v.t.
To instigate or incite; urge: usually with on. [<ON eggja]