"allowable difference between gross and net weight, deduction made from gross weight of goods to account for approximate weight of packaging or container holding them," late 15c., from Anglo-French tare "wastage in goods, deficiency, imperfection" (15c.), from Italian tara, Medieval Latin tara, from Arabic tarah, literally "thing deducted or rejected, that which is thrown away," from taraha "to reject."
c. 1300, materas, "a bed consisting of a bag filled with soft and elastic material and usually tacked at short intervals to prevent the contents from slipping," from Old French materas (12c., Modern French matelas), from Italian materasso and directly from Medieval Latin matracium, borrowed in Sicily from medieval Arabic al-matrah "(the) large cushion or rug for lying on" (also source of Spanish almadraque "mattress," Provençal and Catalan-Latin almatrac), literally "the thing thrown down," from taraha "he threw (down)" with noun prefix ma-. In Middle English also materace, matrasse, etc.,; the modern spelling is attested by early 15c.
1590s, from French tarot (16c.), from Old Italian tarocchi (singular tarocco), a word of unknown origin, perhaps from Arabic taraha "he rejected, put aside." Originally an everyday game deck in much of Europe (though not in Britain), their occult and fortune-telling use seems to date from late 18c. and became popular in England 20c. Tarot games seem to have originated among aristocrats in northern Italy in early 15c. By early 16c. tarocchi had emerged in Italian as the name of the special cards, and by extension the whole pack; whence the French word, German Tarock, etc. The tarots are thus, strictly speaking, the 22 figured cards added to the 56-card suits pack.