trench


Concise Oxford English Dictionary © 2008 Oxford University Press:
trench/trentʃ/
noun
  • 1 a long, narrow ditch.

    ■ a ditch of this type dug by troops to provide shelter from enemy fire.

  • 2 (also ocean trench) a long, narrow, deep depression in the ocean bed, typically running parallel to a plate boundary and marking a subduction zone.
verb
  • 1 dig a trench or trenches in.
  • 2 (trench on/upon) archaic border closely on; encroach upon.
– origin ME (in the senses ‘track cut through a wood’ and ‘sever by cutting’): from OFr. trenche (n.), trenchier (v.), based on L. truncare (see truncate).
'trench' also found in these Oxford entries:

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