entrench

Definitions

• (construction) To dig or excavate a trench; to trench.
• (military) To surround or provide with a trench, especially for defense; to dig in.
• (figuratively) To establish a substantial position in business, politics, etc.
• To invade; to encroach; to infringe or trespass; to enter on, and take possession of, that which belongs to another; usually followed by on or upon.
• To cut in; to furrow; to make trenches in or upon.