v. t. 1. (Mil.) To surround with a trench or with intrenchments, as in fortification; to fortify with a ditch and parapet. Same as intrench. [ 1913 Webster ]
2. to establish in a position from which dislodgement is difficult; to place firmly in a strong position. [ PJC ]
3. To cut in; to furrow; to make trenches in or upon. Syn. -- intrench. [ 1913 Webster ]