Mask
mid 16th century: from French masque, from Italian maschera, mascara, probably from medieval Latin masca ‘witch, spectre’, but influenced by Arabic masḵara ‘buffoon’.
wiktionary
Borrowed from Middle French masque(“a covering to hide or protect the face”), from Italian maschera(“mask, disguise”), from (a byform of, see it for more) Medieval Latin masca, mascha, a borrowing of Proto-West Germanic *maskā from which English mesh is regularly inherited. Replaced Old English grīma(“mask”), whence grime, and displaced non-native Middle English viser(“visor, mask”) borrowed from Old French viser, visier.
From Middle English maske, from Old English max, masċ(“net”), from Proto-West Germanic *maskā(“mesh, netting, mask”). Doublet of mesh and mask above.
From Middle English *mask, masch, from Old English māx, māsc(“mash”). Doublet of mash.
From Middle English masken, short for *maskeren, malskren(“to bewilder; be confused, wander”). More at masker.
etymonline
mask (n.)
1530s, "a cover for the face (with openings for the eyes and mouth), a false face," from French masque "covering to hide or guard the face" (16c.), from Italian maschera, from Medieval Latin masca "mask, specter, nightmare," a word of uncertain origin.
It is perhaps from Arabic maskharah "buffoon, mockery," from sakhira "be mocked, ridiculed." Or it may come via Provençal mascarar, Catalan mascarar, Old French mascurer "to black (the face)," which is perhaps from a Germanic source akin to English mesh (q.v.). But it may be a Provençal word originally: Compare 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 meaning "anything used or practiced for disguise or concealment" is by 1570s.
mask (v.)
1560s, "to take part in a masquerade" (a sense now obsolete); 1580s as "to wear a mask," also "disguise (feelings, etc.) under an assumed outward show;" from mask (n.) and French masquer. Military sense of "conceal" (a battery, etc.) from the view of the enemy" is from 1706. Related: Masked; masking. Masking tape recorded from 1927; so called because it is used to block out certain surfaces before painting.
