Source : Webster's Revised Unabridged Dictionary (1913)

Brokerage \Bro"ker*age\, n.
   1. The business or employment of a broker. --Burke.

   2. The fee, reward, or commission, given or changed for
      transacting business as a broker.

Source : WordNet®

brokerage
     n 1: a stock broker's business; charges a fee to act as
          intermediary between buyer and seller [syn: {brokerage
          firm}, {securities firm}]
     2: the business of a broker; charges a fee to arrange a
        contract between two parties
     3: place where a broker conducts his business [syn: {brokerage
        house}]