noun

1. a person who acts as an agent or intermediary in negotiating contracts, buying and selling, etc.
2. stockbroker

Etymology: ME brokour < Anglo-Norm broceor < OFr brokier, brochier, to broach, tap; orig. sense “wine dealer”

transitive verb, intransitive verb

1. to act as a broker (for)
2. to negotiate or bargain; specif., to influence the outcome of (a political convention) by negotiating, making secret agreements, etc.