Definitions
1.NounAn appealing and easily communicable idea for a work (such as a book, film, or television programme).
2.NounA style of work (such as a book, film, or television programme) characterized by appealing and easily communicable ideas.
3.NounThe overarching idea or theme of a work, particularly one perceived as highly artistic or intellectual.
4.AdjectiveAlternative form of high-concept.