Sentence:  <WSD>Knead</WSD> the dough by pressing down on it with the heels of both your palms and pushing it forward to stretch it, then pulling it back toward you... 
Meaning of the word marked with <WSD> tags:  (to work and press into a mass) To work and press into a mass, usually with the hands; especially, to work, as by repeated pressure with the knuckles, into a well mixed mass, the materials of bread, cake, etc.