Sentence:  The wraith-like events of the last <WSD>few</WSD> days flooded David 's mind and he rubbed his unshaved chin and felt again the ache in his kidneys caused by his saddle odyssey from Boston . 
Meaning of the word marked with <WSD> tags:  a quantifier that can be used with count nouns and is often preceded by `a'; a small but indefinite number