trench trench /ˈtrɛntʃ/

noun

1. () A ditch dug as a fortification having a parapet of the excavated earth  ( trench )
   a ditch dug as a fortification having a parapet of the excavated earth
    Soldiers in World War I spent a lot of time in trenches, defending their positions from enemy fire.
   Soldiers in World War I spent a lot of time in trenches, defending their positions from enemy fire.
   
   
2. Any long ditch cut in the ground  ( trench )
   any long ditch cut in the ground
   
   
3. A long steep-sided depression in the ocean floor  ( deep , oceanic abyss , trench )
   a long steep-sided depression in the ocean floor
   
   

verb

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