Sentence:  Every <WSD>few</WSD> minutes she would awaken for a moment to review things : Stowey , yes , was on his way south , and the two boys were away in school , and nothing was burning on the stove , and Lucretia was coming for dinner and bringing three guests of hers . 
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