(informal) An audience that is difficult to please.

(psychology) A branch of social psychology which is concerned with the behaviour and thought processes of individual crowd members and the crowd as a whole; a study of the dynamics within large groups of people and the nature of the relationship between the individual and society.

(transitive, sometimes figuratively) To force to leave by crowding; to push out or away through strength of numbers.

Synonym of play to the gallery

(idiomatic) To conform to majority beliefs, opinions, or practices.

(nautical) To carry an unusual amount of sail in an attempt to accelerate the speed of a vessel.

To engage in crowd surfing (being carried over the heads of a densely-packed crowd)

The deliberate use of psychological techniques to direct the behavior of a crowd.

(informal) an event that attracts a large number of people.

The collective opinion of a group of individuals rather than that of a single expert.