Naut. [Onomatopœic (connected with LOP v.3). Cf. LAP sb.2, v.1] A state of the sea in which the waves are short and lumpy.
1829. Col. Hawker, Diary (1893), I. 360. There was too much lop. Ibid. (1838), II. 153. The wigeon were always on a lop of the sea.
1847. Illustr. Lond. News, 10 July, 18/2. There being a lop on, the boat lurched to windward.
1899. F. T. Bullen, Way Navy, 38. Quite a lop of a sea gets up, but these battleships take no heed of it.