mask

IPA: mˈæsk

A cover, or partial cover, for the face, used for disguise or protection.
That which disguises; a pretext or subterfuge.
(poetic) Appearance, likeness.
A festive entertainment of dancing or other diversions, where all wear masks; a masquerade.
A person wearing a mask.
(obsolete) A dramatic performance in which the actors wore masks and represented mythical or allegorical characters.
(architecture) A grotesque head or face, used to adorn keystones and other prominent parts, to spout water in fountains, and the like.
(fortification) In a permanent fortification, a redoubt which protects the caponiere.
(fortification) A screen for a battery.
(zoology) The lower lip of the larva of a dragonfly, modified so as to form a prehensile organ.
(publishing, film) A flat covering used to block off an unwanted portion of a scene or image.
(computing, programming) A pattern of bits used in bitwise operations; bitmask.
(computer graphics) A two-color (black and white) bitmap generated from an image, used to create transparency in the image.
(heraldry) The head of a fox, shown face-on and cut off immediately behind the ears.
(psychology) A social phenomenon where autistic people learn, practice, and perform certain behaviors and suppress others in order to appear more neurotypical.
mesh
(UK dialectal, Scotland) The mesh of a net; a net; net-bag.
(UK dialectal) Mash.

(transitive) To cover (the face or something else), in order to conceal the identity or protect against injury; to cover with a mask or visor.
(transitive) To disguise as something else.
(transitive) To conceal from view or knowledge; to cover; to hide.
(transitive, military) To conceal; also, to intervene in the line of.
(transitive, military) To cover or keep in check.
(intransitive) To take part as a masker in a masquerade.
(intransitive) To wear a mask.
(intransitive, obsolete) To disguise oneself, to be disguised in any way.
(intransitive) To conceal or disguise one's autism.
(transitive) to cover or shield a part of a design or picture in order to prevent reproduction or to safeguard the surface from the colors used when working with an air brush or painting
(transitive, computing) To set or unset (certain bits, or binary digits, within a value) by means of a bitmask.
(transitive, computing) To disable (an interrupt, etc.) by setting or unsetting the associated bit.
(transitive, UK dialectal) To mash.
(transitive, UK dialectal) (brewing) To mix malt with hot water to yield wort.
(transitive, Scotland dialectal) To be infused or steeped.
(UK dialectal, Scotland) To prepare tea in a teapot; alternative to brew.
(transitive, UK dialectal) To bewilder; confuse.

Examples of "mask" in Sentences

The only drawback to this mask is the limited vision and breathing.
But the second is that killers often wear what we call the mask of sanity.
Rookie Richard Jefferson said the mask is the ugliest thing he's ever seen.
Some of the idents are certainly clever, but the one with the mask is absolutely incredible.
All I wanted was what they call a mask; that means just a forehead and face, without the head.
That the series refuses a literalist interpretation in favour of, well, McGoohan in a monkey mask is part of the whole sodding point.
` ` I don't think I'm ever going to like a mask on my face after these couple of weeks, but I think the mask is a lot better, '' he said.
I hope that Goblin mask is a halluciantion because the thought of someone wearing a mask with rubber teeth for forty years is really disturbing.
You realise that the mask is a flame-proof (depending on if you believe the tech specs!) head cover designed to defeat petrol bombs and the like?
Being on such a tight budget, the Michael Meyers mask was purchased at a cheap costume shop; the mask is a Star Trek William Shatner mask painted white with the eye holes expanded.