wall - definition and synonyms

noun [countable] 

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  1. 2
    a very tall strong structure that is built to defend a place or to keep people inside a place, for example a prison, castle, or city

    Several men escaped over the prison’s perimeter wall yesterday.

    the walls of the city

    1. a.
      an upright structure made of stone or brick that surrounds or divides someone’s land or garden

      Over the top of the garden wall, he watched his neighbours.

      Parts of the old brick walls had crumbled to the ground.

  2. 3
    emotions or behaviour that prevent people from feeling close to each other

    The years had built a wall between the two families.

    wall of:

    A wall of silence had grown up between them.

  3. 4
    a large number of things that form an upright structure like a wall
    wall of:

    a wall of books/boxes

     Synonyms and related words
    1. a.
      a large amount of something that has risen up high and makes it difficult for people to pass through

      A wall of dark water approached their small boat.

  4. 5
    the side of something with an empty space inside, for example a box or a pipe
  5. 6
    the outer layer of a body part such as the stomach or the chest

    inflammation of the bowel wall

  6. 7
    computing an area of a social networking website where you can write personal messages for a user

    What can I write on my boyfriend’s Facebook wall for his 16th birthday?