The Collaborative International Dictionary of English v.0.48:

Financier \Fin`an*cier"\, v. i. [imp. & p. p. Financiered; p.
   pr. & vb. n. Financiering.]
   To conduct financial operations.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Financier \Fin`an*cier"\ (?; 277), n. [Cf. F. financier.]
   1. One charged with the administration of finance; an officer
      who administers the public revenue; a treasurer. --Burke.
      [1913 Webster]

   2. One skilled in financial operations; one acquainted with
      money matters.
      [1913 Webster]

WordNet (r) 3.0 (2006):

financier
    n 1: a person skilled in large scale financial transactions
         [syn: financier, moneyman]
    v 1: conduct financial operations, often in an unethical manner