Sentence:  Frank stuck a dollop onto the end of his stick and pushed it into the gap that surrounded Bob. “Ooooh.”, Bob cried, “That tickles!” <WSD>Stickful</WSD> after <WSD>stickful</WSD>, Frank went about his work, whistling as he did so. 
Meaning of the word marked with <WSD> tags:  An amount that is held on one stick.