The front line of any field of endeavor, as the line of scrimmage in American football, patrol duty for a policeman.

Third-person singular simple present indicative form of trench

plural of trench

plural of Trench

simple past tense and past participle of trench

present participle of trench

The excavation of a trench.

trenchant

A long, narrow ditch or hole dug in the ground. / (military) A narrow excavation as used in warfare, as a cover for besieging or emplaced forces.

(usually followed by upon) To invade, especially with regard to the rights or the exclusive authority of another; to encroach.