Definition

1. Noun:

   • A long, narrow ditch in the ground: A deep, linear excavation, typically used for drainage, irrigation, or as a fortification.
   • A long, deep depression in the ocean floor: A steep-sided, narrow valley on the seabed, often marking the boundary between tectonic plates.

2. Verb:

   • To dig a long, narrow ditch: To excavate a trench.
   • To cut or carve deeply into a surface: To make a deep, narrow cut or indentation.
   • To fortify with trenches: To surround or protect a military position by digging trenches.
   • To encroach or infringe upon something: To intrude on or impinge upon the rights, territory, or domain of another.

Examples of Usage

• Noun:

  • The farmer dug a trench to drain water from the flooded field.
  • The Mariana Trench is the deepest known point in the Earth's oceans.

• Verb:

  • The soldiers were ordered to trench around their camp for defense.
  • The artist trenched intricate patterns into the wooden panel.
  • His aggressive business tactics trench upon ethical boundaries.

Advanced Usage

• "To trench on/upon": To verge on or approach the nature of something, often something negative.
  • His constant criticism trenched on cruelty. (His constant criticism was almost cruel.)

Variants and Related Words

• Entrench (verb): To establish something firmly or solidly; to dig defensive trenches.
  • The company's policies are deeply entrenched in tradition.
• Trenchant (adjective): Sharp, vigorous, and incisive (often used for criticism or analysis).
  • She delivered a trenchant critique of the proposal.

Synonyms

• Noun: Ditch, furrow, channel, moat, gully.
• Verb: Dig, excavate, carve, encroach, infringe.

Related Phrasal Verbs

• Trench on/upon: To encroach or infringe upon.
  • The new regulations trench upon our personal freedoms.

Related Idioms

• Trench warfare: A type of combat where opposing troops fight from trenches facing each other, often associated with World War I.
  • The battle descended into a brutal stalemate of trench warfare.

Noun

1. any long ditch cut in the ground
2. a long steep-sided depression in the ocean floor
3. a ditch dug as a fortification having a parapet of the excavated earth

Verb

1. dig a trench or trenches
   • The National Guardsmen were sent out to trench
2. cut a trench in, as for drainage
   • ditch the land to drain it
   • trench the fields
3. set, plant, or bury in a trench
   • trench the fallen soldiers
   • trench the vegetables
4. cut or carve deeply into
   • letters trenched into the stone
5. fortify by surrounding with trenches
   • He trenched his military camp
6. impinge or infringe upon
   • This impinges on my rights as an individual
   • This matter entrenches on other domains