shot-clog

from The Collaborative International Dictionary of English v.0.48

Shot-clog \Shot"-clog`\, n.
   A person tolerated only because he pays the shot, or
   reckoning, for the rest of the company, otherwise a mere clog
   on them. [Old Slang]
   [1913 Webster]

         Thou common shot-clog, gull of all companies.
                                                  --Chapman.
   [1913 Webster]