n.1 an agent who buys and sells for others; a middleman.
2 a member of the Stock Exchange dealing in stocks and shares.
Usage:
In the UK from Oct. 1986 officially called broker-dealer and entitled to act as agent and principal in share dealings.
3 Brit. an official appointed to sell or appraise distrained goods.
Etymology: ME f. AF brocour, of unkn. orig.