Sentence:  At twilight in the summer there is never anybody to fear—man, woman, or cat—in the chambers and at that hour the mice come out. They do not eat parchment or foolscap or red tape, but they eat the <WSD>luncheon</WSD> crumbs. 
Meaning of the word marked with <WSD> tags:  A portion of food taken at any time except at a regular meal; an informal or light repast.