trench

Short definition from Wiktionary

Noun

1. 1
   A long, narrow ditch or hole dug in the ground.
2. 2
   A narrow excavation as used in warfare, as a cover for besieging or emplaced forces.
3. 3
   A pit, usually rectangular with smooth walls and floor, excavated during an archaeological investigation.
4. 4
   A trench coat.

Verb

1. 1
   To invade, especially with regard to the rights or the exclusive authority of another; to encroach.
2. 2
   To excavate an elongated pit for protection of soldiers and or equipment, usually perpendicular to the line of sight toward the enemy.
3. 3
   To excavate an elongated and often narrow pit.
4. 4
   To have direction; to aim or tend.
5. 5
   To cut; to form or shape by cutting; to make by incision, hewing, etc.
6. 6
   To cut furrows or ditches in.
7. 7
   To dig or cultivate very deeply, usually by digging parallel contiguous trenches in succession, filling each from the next.

Proper noun

1. 1
   A suburb of Telford, Telford and Wrekin borough, Shropshire, England (OS grid ref SJ6912).
2. 2
   A habitational surname.