Trench
Part of speech: noun
Definition: A long, narrow ditch or hole dug in the ground, especially in warfare. A pit, usually rectangular with smooth walls and floor, excavated during an archaeological investigation. A trench coat.
Part of speech: verb
Definition: }} To invade, especially with regard to the rights or the exclusive authority of another. To excavate an elongated pit for protection of soldiers and or equipment, usually perpendicular to the line of sight toward the enemy. To excavate an elongated and often narrow pit.
Example sentence: About forty miles away from Paris, I began to see the old trench flares they were sending up at Le Bourget. I knew then I had made it, and as I approached the field with all its lights, it was a simple matter to circle once and then pick a spot sufficiently far away from the crowd to land O.K.
Entrench
Part of speech: verb
Definition: To dig or excavate a trench; to trench.To surround or provide with a trench, especially for defense; to dig in.To establish a substantial position in business, politics, etc.