v. [f. TRENCH sb. or v. + PLOW v.] trans. and intr. To plow to the depth of two furrows, bringing the lower soil to the surface; to turn a second furrow-slice on the top of the first, by following in the same furrow with a plow set much deeper.
1731–3. Tull, Horse-Hoeing Husb., xix. 274. We Trench-plow where the Land will allow it.
1764. Museum Rust., III. xciv. 378. When I trench-plough a field, I go as deep with the second plough as four good horses and strong cattle can well draw.
1844. Stephens, Bk. Farm, I. 664. I trench-ploughed a field of 25 acres.
Hence Trench-plow, -plough sb., a plow designed or adjusted for trench-plowing; Trench-plowing, -ploughing vbl. sb., the action of the verb.
1763. Museum Rust., I. 343. If … the land had a trench-ploughing, it would be of great advantage.
1805. R. W. Dickson, Pract. Agric., I. 11. The Trench-Plough, which is so contrived as to turn up the ground to a great depth.
1844. Stephens, Bk. Farm, I. 499. A conduit … was built and covered with land stones obtained from the field by trench-ploughing.
