late 14c., mesche, "open space in a net or netting," probably from late Old English max "net," earlier mæscre, from Proto-Germanic *mask- (source also of Old Norse möskvi, Danish maske, Swedish maska, Old Saxon masca, Middle Dutch maessce, Dutch maas "mesh," Old High German masca, German Masche "mesh"), from PIE *mezg- "to knit, plait, twist" (source also of Lithuanian mezgu, megzti "to knit," mazgas "knot"). In machinery, "the engagement of the teeth in gearing" (by 1875). Mesh-work in netting is attested by 1785.
1530s, originally in the figurative sense of "entangle, involve;" the literal transitive sense of "to catch in a net, entangle" is from 1540s; from mesh (n.). Literal sense "to become enmeshed" is from 1580s. Intransitive sense of "become engaged," as the teeth of one wheel with those of another, is by 1850. The figurative sense of "to fit in, combine" is by 1944. Related: Meshed; meshing.
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.
"metal ring armor," c. 1300, from Old French maille "link of mail, mesh of net," from Latin macula "mesh in a net," originally "spot, blemish," on notion that the gaps in a net or mesh looked like spots. Its use dates from late Roman times. The favorite armor in Europe 12c.-13c., it was effective, but heavy and costly.
It forms all or part of: annex; annexation; connect; connection; denouement; net (n.) "netting, network, mesh used for capturing;" nettle; nexus; node; nodule; noose.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit nahyati "binds, ties;" Latin nodus "knot;" Old Irish nascim "I bind, oblige;" Old English net "netting, network."