Emily Dickinson Lexicon

ER'GOT, n. [Fr. a spur.]

1. In farriery, a stub, like a piece of soft horn, about the bigness of a chestnut, situated behind and below the pastern joint, and commonly hid under the tuft of the fetlock.
2. A parasitic fungus growing within the glumes of various grasses, as wheat, rye, herd's-grass, &c. It is the Spermœdia Clavus of the botanists.