Sentence:  "Now," resumed Silver, "here it is. You give us the chart to get the <WSD>treasure</WSD> by, and drop shooting poor seamen and stoving of their heads in while asleep. You do that, and we'll offer you a choice. Either you come aboard along of us, once the <WSD>treasure</WSD> shipped, and then I'll give you my affy-davy, upon my word of honour, to clap you somewhere safe ashore. 
Meaning of the word marked with <WSD> tags:  A collection of valuable things; accumulated wealth; a stock of money, jewels, etc.