Answer:
rapid eating
Explanation:
The word devour means consuming and absorbing something rapidly, usually without leaving no trace. It can be used for demolishing and destroying, for a force wiping something out.
Here it is used with its second meaning which is rapid eating. Devouring something also means eating it hungrily or quickly, feeding wholeheartedly on it. In this passage, it is meant that someone was so hungry that they ate every single piece of food that could be found in the fridge.
