(A.), in Stock Exchange parlance, means a member of the Stock Exchange who waddles off on settlement day without settling his account. All such defaulters are black-boarded and struck off the list. Sometimes it is used for one who cannot pay his debts, one who trades without money.
Pitt ... gambled and lost: But who must answer for the cost? Not he, indeed! A duck confounded lame Not unattended wadding ...
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894