The phrase "processor bowl" refers to a part of a food processor where ingredients are placed and mixed or chopped. It is a bowl-like container inside the food processor that holds the food being processed. Full definition
In food processor bowl fitted with metal blade, process orange, lemon and lime juice. (canolainfo.org)
If there's room in the fridge, you can speed up the process by sticking the food processor bowl with the chocolate into the refrigerator for about 10 minutes, but no longer. (confettiandbliss.com)
In food processor bowl combine flour, sugar, cornstarch, salt, and baking powder. (humanesociety.org)