Sentence:  ... this old brother of ours tho' is <WSD>smoky</WSD> and shrewd, and tho' an odd, a sensible fellow; 
Meaning of the word marked with <WSD> tags:  Suspicious; open to suspicion; jealous<ref>B.E. "A New Dictionary of the Canting Crew", London: W. Hawes "et al.", 1699: “Smoky, c. Jealous.”[http://name.umdl.umich.edu/A39127.0001.001]</ref>.