- entrench⇄entrench, transitive verb.
1. to surround with a trench; fortify with trenches.
Ex. Our soldiers were entrenched opposite the enemy.
2. (Figurative.) to establish firmly.
Ex. Exchanging gifts at Christmas is a custom entrenched by - entrench⇄v.i. to trespass; encroach; infringe.
Ex. Do not entrench upon the rights of others.
Also, intrench.