guard - definition and synonyms


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  1. 1
    [countable] someone whose job is to look after a place or person so that no one causes damage, steals anything, or escapes

    a prison guard

    armed guard:

    There was an armed guard on duty outside his door.

    post a guard:

    The captain posted two guards at the gate.

    1. a.
      [singular] a group of guards who are working together
      change/relieve the guard:

      The guard was due to be relieved at six o’clock.

  2. 2
    [singular] a unit of soldiers or police officers, especially one that has a particular job

    members of the Presidential guard

    1. a.


      [plural] used in the names of some units in an army, especially the British army

      a captain in the Scots Guards

    2. b.


      [countable] Irish informal an officer in the Irish police force
       Synonyms and related words
  3. 3
    [countable] something that helps to stop something bad from happening
    guard against:

    We kept the landmines as a guard against invasion from the North.

  4. 4
    [countable] British old-fashioned someone on a train whose job is to check tickets, announce the stations, and look after the passengers. The American word is conductor.
  5. 5
    [countable] something that covers a dangerous part of a machine
    1. a.
      something that you wear to protect a part of your body, for example when playing a sport

      a mouth guard

    2. b.
      the way that boxers stand with their hands in front of their face, to protect themselves from an opponent
      put up your guard(s):

      They put their guards up and began circling each other.

  6. 6
    [countable] in basketball, one of two players who are responsible for moving the ball around the court in order to create opportunities for their team to score
  7.   From our crowdsourced Open Dictionary
    be on one's guard to be extra careful to prevent something bad from happening

    As there are no regulations for coachsurfing, coachsurfers must be on their guard.

    Submitted by Boris Marchenko from Russian Federation on 17/03/2016