Sentence:  During the next few days, while the meat dried, they were both busy. They finished the bowl boat and coated it with the <WSD>glue</WSD> Jondalar made by boiling down the hooves, bone, and hide scraps. 
Meaning of the word marked with <WSD> tags:  A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.