Emily Dickinson Lexicon

FROG, n. [Sax. froga, frogga; Dan. fröe. Qu. from the root of break, as L. rana, from the root of rend, from its broken shape, or from leaping, or its fragor or hoarse voice.]

1. An amphibious animal of the genus Rana, with four feet, a naked body, and without a tail. It is remarkable for swimming with rapidity, and for taking large leaps on land. Frogs lie torpid during winter. Encyc.
2. In farriery. [See Frush.]
3. A cloke button, swelled in the middle.