Sentence:  My own son had a bunny <WSD>rug</WSD> of which he was very fond and on being put to bed he would always demand his “bunny <WSD>rug</WSD> to suck his finger with.″ 
Meaning of the word marked with <WSD> tags:  A (usually thick) piece of fabric used for warmth (especially on a bed); a blanket. (1591)