Lewis & Short

pastĭnum, i, n.,

  1. I. a kind of two-pronged dibble, for preparing the ground and for setting plants with: pastinum vocant agricolae ferramentum bifurcum, quo semina panguntur. Col. 3, 18. 1, and 6.
  2. II. Transf.
    1. A. The act of digging up and trenching the ground: pastinum fieri nunc tempus est, Pall. 2, 10, 1.
    2. B. In plur., ground so prepared: sed haec in pastinis vel sulcis ratio erit, Pall. 3, 9, 13: latitudo pastinorum, id. 1, 7, 2; 1, 34, 2: instituere, Dig. 24, 3, 7.