Obs. rare. [f. EARTH sb.1; the correct form and the etymology of the second element are unknown.] An earthquake.
1297. R. Glouc. (1810), 414. Þoru out al Engelond so gret erþgryþe [v.r. erþgrine, erþgrene, erþe dene, erþe den] þer com. Ibid., 530. Erthgrine strong inou aboute Leinte.
