Definition of forum
the marketplace or public place of an ancient Roman city forming the center of judicial and public business
a public meeting place for open discussion "The club provides a forum for people interested in local history."
a medium (such as a newspaper or online service) of open discussion or expression of ideas
a judicial body or assembly : COURT
a public meeting or lecture involving audience discussion "The town has scheduled a public forum to discuss the proposal."
a program (as on radio or television) involving discussion of a problem usually by several authorities