trench

trench (http://definr.com/trench)

     n 1: a ditch dug as a fortification having a parapet of the
          excavated earth
     2: a long steep-sided depression in the ocean floor [syn: deep,
         oceanic abyss]
     3: any long ditch cut in the ground
     v 1: impinge or infringe upon; "This impinges on my rights as an
          individual"; "This matter entrenches on other domains"
          [syn: impinge, encroach, entrench]
     2: fortify by surrounding with trenches; "He trenched his
        military camp"
     3: cut or carve deeply into; "letters trenched into the stone"
     4: set, plant, or bury in a trench; "trench the fallen
        soldiers"; "trench the vegetables"
     5: cut a trench in, as for drainage; "ditch the land to drain
        it"; "trench the fields" [syn: ditch]
     6: dig a trench or trenches; "The National Guardsmen were sent
        out to trench"