The definition of a mask is something that conceals or disguises, particularly a covering for the face.(noun)
An example of a mask is a face covering that children wear on Halloween.
Mask is defined as to cover up, conceal, disguise or hide.(verb)
An example of mask is for a person to pretend to be happy when she is really sad.
See mask in Webster's New World College Dictionary
Origin: Fr masque < It maschera, mascara, a mask, prob. < Ar maskhara, a clown, buffoonery
See mask in American Heritage Dictionary 4
Origin: French masque
Origin: , from Italian maschera
Origin: , from Medieval Latin masca, specter, witch, mask.
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