entrench Meaning, Definition & Usage

1. verb fix firmly or securely
   intrench.
   
2. verb impinge or infringe upon
   impinge; trench; encroach.
   
   • This impinges on my rights as an individual
   • This matter entrenches on other domains
3. verb occupy a trench or secured area
   dig in.
   
   • The troops dug in for the night

WordNet