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1530s, from Middle French masque "covering to hide or guard the face" (16c.), from Italian maschera, from Medieval Latin masca "mask, specter, nightmare," of uncertain origin, perhaps from Arabic maskharah "buffoon, mockery," from sakhira "be mocked, ridiculed." Or via Provençal mascarar, Catalan mascarar, Old French mascurer "to black (the face)," perhaps from a Germanic source akin to English mesh (q.v.). But cf. Occitan mascara "to blacken, darken," derived from mask- "black," which is held to be from a pre-Indo-European language, and Old Occitan masco "witch," surviving in dialects; in Beziers it means "dark cloud before the rain comes." [See Walther von Wartburg, "Französisches Etymologisches Wörterbuch: Eine Darstellung galloromanischen sprachschatzes"]. Figurative use by 1570s.
1560s, "take part in a masquerade;" 1570s, "to disguise;" 1580s, "to wear a mask," from mask (n.). Figurative use by 1580s. Extended sense of "to disguise" is attested from 1847. Related: Masked; masking. Masking tape recorded from 1927; so called because it is used to block out certain surfaces before painting.
A covering for the nose and mouth that is used for inhaling oxygen or an anesthetic.
A covering worn over the nose and mouth, as by a surgeon or dentist, to prevent infection.
A facial bandage.
Something, often a trait, that disguises or conceals.
Any of a various of conditions producing alteration or discoloration of the skin of the face.
An expressionless appearance of the face seen in certain diseases, such as Parkinsonism.
To cover with a protective mask.
To cover in order to conceal, protect, or disguise.
Latent or hidden, as a symptom or disease.
Having masklike markings on the head or face.
Having the anatomy of the next developmental form outlined beneath the integument, as in certain insect pupae.