A person who takes part in dialogue or conversation.
A man in the middle of the line in a minstrel show who questions the end men and acts as leader.
A decree of a court.
An interlocutory judgement or sentence.
An intermediary.
Any substance formed as part of a series of chemical reactions that is not the end-product.
Anything in an intermediate position.
Being between two extremes, or in the middle of a range.
To mediate, to be an intermediate.
To arrange, in the manner of a broker.