Obs. [f. L. sulcāt-, pa. ppl. stem of sulcāre to plough, f. SULCUS. Cf. SULK v.1] trans. To plough (esp. the seas).
1577. Hanmer, Anc. Eccl. Hist., 324. A mightie Easterne winde, which draue the ship with violence, swiftely for to sulcate the seas. Ibid. (a. 1604), Chron. Irel. (1633), 85. The Irish nation … would not sulcate the seas, neither give themselves to merchandise.
1656. Blount, Glossogr.
