1. long, narrow ditches dug in the ground, especially those used by soldiers for protection during warfare
Usage: military
2. long, narrow excavations in the ground for various purposes such as drainage or laying pipes

Examples

• The soldiers dug trenches to protect themselves from enemy fire.
• World War I was characterized by brutal trench warfare.
• Workers dug trenches to install the new water pipes.
• The construction crew filled in the old trenches after completing the project.
• Rain water collected in the trenches around the building site.
• The archaeologists discovered ancient trenches at the battlefield site.