idea

noun

1. 1

   An abstract archetype of a given thing, compared to which real-life examples are seen as imperfect approximations; pure essence, as opposed to actual examples.

2. 2

   The conception of someone or something as representing a perfect example; an ideal.

3. 3

   The form or shape of something; a quintessential aspect or characteristic.

4. 4

   An 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. 5

   More generally, any result of mental activity; a thought, a notion; a way of thinking.

6. 6

   A 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. 7

   A purposeful aim or goal; intent

   “Yeah, that's the idea.”

8. 8

   A 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. 9

   A musical theme or melodic subject.