Emily Dickinson Lexicon

BROCK, n. [Sax. broc; Ir. broc; Corn. id.; W. broc, a badger, and noise, din, tumult, foam, anger; broçi, to chafe, fume, wax fierce, from rhoc, a rough sound; rhoçain, to grunt. – Owen.]

A badger; an animal of the genus Ursus, found in the northern parts of Europe and Asia. The Russians call it barsuk. In Ir. brech is a wolf, a wild savage and a badger.