Etymology
From Spanish maquila, from Andalusian Arabic مَكِيلَة (makíla), from Arabic مَكِيلَة (makīla, “measured”). In reference to factories, via Spanish clipping of maquiladora, from maquilar (“to assemble”) + -adora (“-ator: forming agent nouns”), from maquilar's original sense of taking a toll of grain. Also understood as a clipping within English.
Definitions & examples from Wiktionary (CC BY-SA 3.0).