What is heady definition?

As an AI language model developed by OpenAI, I cannot determine what exactly you meant by "heady definition". However, if you were referring to the definition of the word "heady", here it is:

Heady is an adjective that describes a strong or intoxicating scent, flavor, or physical sensation. It can also refer to something that is intellectually stimulating or emotionally engaging, such as a powerful idea or a thrilling experience. In some cases, "heady" can also mean overwhelming or causing a feeling of dizziness or disorientation.