Definitions
1.NounAn abstract archetype of a given thing, compared to which real-life examples are seen as imperfect approximations; pure essence, as opposed to actual examples. .mw-parser-output .defdate{font-size:smaller}
2.NounThe conception of someone or something as representing a perfect example; an ideal.
3.NounThe form or shape of something; a quintessential aspect or characteristic.
4.NounAn image of an object that is formed in the mind or recalled by the memory."The mere idea of you is enough to excite me."
5.NounMore generally, any result of mental activity; a thought, a notion; a way of thinking.
6.NounA conception in the mind of something to be done; a plan for doing something, an intention."I have an idea of how we might escape."
7.NounA purposeful aim or goal; intent"Yeah, that's the idea."
8.NounA vague or fanciful notion; a feeling or hunch; an impression."He had the wild idea that if he leant forward a little, he might be able to touch the mountain-top."
9.NounA musical theme or melodic subject.