... operator in function

Sorry for the noob question. I've been immersed in Java for the past while and the book for this course doesn't cover C++.

I have to fill in a function to add keywords (of string type) to an Item object. the prototype of the function is as follows.

 void addKeywordsForItem(const Item* const item, int nKeywords, ...);

In Java ... returns the remainder of arguments as a String object and I'm guessing C++ does something similar but I don't know the name of ... so searching for it is rather difficult.

What is ... called and what does it do?