trench

n. ditch, canal

v. dig a deep ditch, fortify with trenches, entrench

A trench is a type of excavation or depression in the ground. Trenches are generally defined by being deeper than they are wide (as opposed to a wider gully or ditch), and by being narrow compared to their length (as opposed to a simple hole).
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Noun
1. a ditch dug as a fortification having a parapet of the excavated earth
(hypernym) ditch
(hyponym) approach trench, communication trench
(part-holonym) entrenchment, intrenchment
2. a long steep-sided depression in the ocean floor
(synonym) deep, oceanic abyss
(hypernym) natural depression, depression
(hyponym) Atacama Trench
3. any long ditch cut in the ground
(hypernym) ditch
(hyponym) furrow
Verb
1. impinge or infringe upon; "This impinges on my rights as an individual"; "This matter entrenches on other domains"
(synonym) impinge, encroach, entrench
(hypernym) trespass, take advantage
2. fortify by surrounding with trenches; "He trenched his military camp"
(hypernym) fortify, fort
3. cut or carve deeply into; "letters trenched into the stone"
(hypernym) cut
(derivation) trencher
4. set, plant, or bury in a trench; "trench the fallen soldiers"; "trench the vegetables"
(hypernym) put, set, place, pose, position, lay
5. cut a trench in, as for drainage; "ditch the land to drain it"; "trench the fields"
(synonym) ditch
(hypernym) excavate, dig, hollow
6. dig a trench or trenches; "The National Guardsmen were sent out to trench"
(hypernym) dig, dig out

(v. t.)
To fortify by cutting a ditch, and raising a rampart or breastwork with the earth thrown out of the ditch; to intrench.
  

(v. t.)
To dig or cultivate very deeply, usually by digging parallel contiguous trenches in succession, filling each from the next; as, to trench a garden for certain crops.
  

(v. t.)
To cut; to form or shape by cutting; to make by incision, hewing, or the like.
  

(v. t.)
To cut furrows or ditches in; as, to trench land for the purpose of draining it.
  

(v. t.)
An excavation made during a siege, for the purpose of covering the troops as they advance toward the besieged place. The term includes the parallels and the approaches.
  

(v. t.)
An alley; a narrow path or walk cut through woods, shrubbery, or the like.
  

(v. t.)
A long, narrow cut in the earth; a ditch; as, a trench for draining land.
  

(v. i.)
To have direction; to aim or tend.
  

(v. i.)
To encroach; to intrench.
  

Synonyms and related words:
Bassalia, abri, abysm, abyss, abyssal zone, adit, air-raid shelter, approach, approach trench, aqueduct, arroyo, barge in, bathyal zone, benthos, bomb shelter, bombproof, bore, bottom, bottom glade, bottom waters, bottomless depths, bottoms, box canyon, breach, break, break in, break in upon, bunker, burrow, burst in, butt in, canal, canalization, canalize, canyon, carve, cave, cavity, chamfer, channel, channelize, chap, charge in, chasm, check, chimney, chink, chisel, cleave, cleft, cleuch, clough, col, concealment, conduct, conduit, convey, corrugate, coulee, couloir, countermine, coupure, course, cover, covert, coverture, crack, cranny, crash, crash in, crash the gates, creep in, crevasse, crevice, crimp, crowd in, cut, cut apart, cut in, cwm, cyclone cellar, dado, dale, defile, dell, delve, dig, dig out, dike, dingle, ditch, donga, double sap, drain, draw, dredge, drill, drive, duct, dugout, earth, edge in, egress, elbow in, encroach, engrave, entrance, entrench, entrenchment, excavate, excavation, exit, fallout shelter, fault, fire trench, fissure, flaw, flume, flute, flying sap, foist in, fortified tunnel, fosse, foxhole, fracture, funk hole, funnel, furrow, gallery, gap, gape, gash, gill, glen, goffer, gorge, gouge, gouge out, groove, ground, grove, grub, gulch, gulf, gully, gutter, ha-ha, hole, horn in, impinge, impose, impose on, impose upon, incise, incision, infiltrate, infringe, ingress, inner space, insinuate, interfere, interlope, interpose, intervale, intervene, intrude, invade, irrupt, joint, kennel, kloof, leak, lower, lunar rill, mine, moat, notch, nullah, obtrude, ocean bottom, ocean depths, ocean floor, open, opening, parallel, pass, passage, passageway, pelagic zone, pipe, pleat, plow, press in, push in, put on, put through, put upon, quarry, rabbet, ravine, rent, rifle, rift, rime, rive, rupture, rush in, rut, safety zone, sap, scissure, scoop, scoop out, score, scrabble, scrape, scratch, seam, shelter, shovel, sink, siphon, slink in, slip in, slit, slit trench, slot, smash in, sneak in, spade, split, squeeze in, steal in, storm cave, storm cellar, storm in, strath, streak, striate, sunk fence, the deep, the deep sea, the deeps, the depths, throng in, thrust in, trespass, trough, troughing, troughway, tunnel, vale, valley, verge, void, wadi, way, work in, worm in, wrinkle