What does Headiness mean?

What does Headiness mean? 1. a. Intoxicating or stupefying: heady liqueur. b. Tending to upset the mind or the balance of senses: standing on a heady outcrop of rock.

1. a. Intoxicating or stupefying: heady liqueur. b. Tending to upset the mind or the balance of senses: standing on a heady outcrop of rock.
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