idea
(philosophy) 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.
(obsolete) The conception of someone or something as representing a perfect example; an ideal.
(obsolete) The form or shape of something; a quintessential aspect or characteristic.
An image of an object that is formed in the mind or recalled by the memory.
More generally, any result of mental activity; a thought, a notion; a way of thinking.
A conception in the mind of something to be done; a plan for doing something, an intention.
A purposeful aim or goal; intent
A vague or fanciful notion; a feeling or hunch; an impression.
(music) A musical theme or melodic subject.