Definitions
1.verbTo dig or excavate a trench; to trench.
2.verbTo surround or provide with a trench, especially for defense; to dig in."The army entrenched its camp, or entrenched itself."
3.verbTo establish a substantial position in business, politics, etc."Senator Cornpone was able to entrench by spending millions on each campaign."
4.verbTo 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.
5.verbTo cut in; to furrow; to make trenches in or upon.