tara
/ˈtaɾa/ · B1 · noun · f
tare
📦⚖️ Same word as English tare, from Arabic tarḥa: the part you deduct
Merchants subtracted the box's weight (la tara) to get the net weight. Anything deducted is a shortfall, so tara also came to mean a defect or flaw, as in tener una tara.