Sentence:  She paused at the kitchen door , caught her breath , told herself firmly that the opium was only an attempt to frighten her and went into the kitchen , where Glendora was eyeing the chickens dismally and Maude was <WSD>cleaning</WSD> lamp chimneys . 
Meaning of the word marked with <WSD> tags:  make clean by removing dirt, filth, or unwanted substances from