According to that Wikipedia article, the word originates from Tamil, and:
"Archaeological evidence dating to 2600 BCE from Mohenjo-daro suggests the use of mortar and pestle to pound spices including mustard, fennel, cumin, and tamarind pods with which they flavoured food."
https://en.wikipedia.org/wiki/Curry
According to that Wikipedia article, the word originates from Tamil, and:
"Archaeological evidence dating to 2600 BCE from Mohenjo-daro suggests the use of mortar and pestle to pound spices including mustard, fennel, cumin, and tamarind pods with which they flavoured food."