Chili

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early 17th century: from Spanish chile, from Nahuatl chilli .

wiktionary

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Borrowed from Spanish chile, from Classical Nahuatl chīlli.

Ellipsis of  chili con carne, from Spanish chile con carne(literally “chili with meat”). 

etymonline

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chili (n.)

also chilli, "pod or fruit of a type of American pepper, used as a condiment," 1660s, from Nahuatl (Aztecan) chilli, native name for the peppers. Not named for the South American country. As short for chile con carne and similar dishes, attested by 1846.