Idea behind a business, central to the generation of revenue.

(business) A dinner at which traders meet to propose investment ideas.

plural of idea dinner

(art) A form of art based on small individual ideas rather than generic aesthetic, material and disciplinary concerns.

(informal) To get the inspiration or temptation to do something unwise.

To understand the main points.

An idée fixe, an obsession.

A disagreement of opposing ideas between countries, which leads to the exercise of their influence abroad to spread their respective ideologies.

plural of business idea

(informal) To not know; to have no idea.