1649. Blithe, Eng. Improv. Impr. (1653), 190. The Shield-board, some call Breast-board, or Earth-board, or Furrow-board.
1765. Univ. Mag., XXXVII. 33/2. The plat, or earth-board, turned most of the carrots out of the ground.
1884. Longm. Mag., Feb., 403. The hardy rustic still goes into the woods and seeks for an elm for the earth-boards.