Definition of "entrench" in English

verb

1. (literally) To cut in; to furrow; to make trenches in or upon.

2. To become completely absorbed in and fully accept one's beliefs, even in the face of evidence against it and refusing to be reasoned with.

3. To establish a substantial position in business, politics, etc.

   • Senator Cornpone was able to entrench by spending millions on each campaign.

4. 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.