Tamale

google

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from Mexican Spanish tamal, plural tamales, from Nahuatl tamalli .

wiktionary

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Back-formation from the plural  tamales, from Spanish tamales, plural of  tamal, from Nahuatl tamalli(“wrapped”). 

etymonline

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tamale (n.)

1856, false singular from tamales (1690s), from American Spanish tamales, plural of tamal, from Nahuatl tamal, tamalli, a food made of Indian corn and meat.