shinplaster

from WordNet (r) 3.0 (2006)

shinplaster
    n 1: paper money of little value issued on insufficient security

from The Collaborative International Dictionary of English v.0.48

Shinplaster \Shin"plas`ter\, n.
   Formerly, a jocose term for a bank note greatly depreciated
   in value; also, for paper money of a denomination less than a
   dollar. [U. S.]
   [1913 Webster] Shinto