A mask is a disguise that covers just your face. Your Halloween costume might include a scary monster mask and a furry suit with a tail, or maybe you just wear that for fun.

You can wear a mask to conceal your identity, to dress up as a character for a party or holiday, to scare someone, or to make someone laugh. Robbers sometimes wear masks so they can't be identified, and an actor might wear a mask while playing the role of a rabbit in a play. Other masks are useful, including masks that protect patients from germs and masks that keep skiers' faces warm.

Definitions of mask
  1. noun
    a covering to disguise or conceal the face
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    domino, eye mask, half mask
    a mask covering the upper part of the face but with holes for the eyes
    false face
    a mask worn as part of a masquerade costume
    type of:
    an artifact that covers something else (usually to protect or shelter or conceal it)
    any attire that modifies the appearance in order to conceal the wearer's identity
  2. noun
    a protective covering worn over the face
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    face mask
    mask that provides a protective covering for the face in such sports as baseball or football or hockey
    gas helmet, gasmask, respirator
    a protective mask with a filter; protects the face and lungs against poisonous gases
    welder's mask
    a mask that you wear for protection when doing welding
    catcher's mask
    a mask to protect the face of the catcher in baseball
    face guard
    face mask consisting of a strong wire mesh on the front of football helmets
    fencer's mask, fencing mask
    a face mask made of fine mesh that is worn over a fencer's face
    ski mask
    a woolen face mask to protect the face from cold while skiing on snow
    type of:
    protection, protective cover, protective covering
    a covering that is intend to protect from damage or injury
  3. noun
    activity that tries to conceal something
    “no mask could conceal his ignorance”
    “they moved in under a mask of friendship”
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    type of:
    concealing, concealment, hiding
    the activity of keeping something secret
  4. noun
    a party of guests wearing costumes and masks
    synonyms: masque, masquerade, masquerade party
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    fancy-dress ball, masked ball, masquerade ball
    a ball at which guests wear costumes and masks
    type of:
    a group of people gathered together for pleasure
  5. verb
    put a mask on or cover with a mask
    Mask the children for Halloween”
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    take the mask off
    type of:
    provide with a covering or cause to be covered
  6. verb
    hide under a false appearance
    “He masked his disappointment”
    synonyms: cloak, dissemble
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    type of:
    make unrecognizable
  7. verb
    make unrecognizable
    “The herb masks the garlic taste”
    synonyms: disguise
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    cloak, dissemble
    hide under a false appearance
    hide (feelings) from other people
    take part in a masquerade
    disguise by camouflaging; exploit the natural surroundings to disguise something
    type of:
    conceal, hide
    prevent from being seen or discovered
  8. verb
    cover with a sauce
    mask the meat”
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    type of:
    provide with a covering or cause to be covered
  9. verb
    shield from light
    synonyms: block out
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    type of:
    provide with a covering or cause to be covered
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