Emily Dickinson Lexicon

HEAD'Y, a. [hed'y. See Head.]

1. Rash; hasty; precipitate; violent; disposed to rush forward in an enterprise without thought or deliberation; hurried on by will or passion; ungovernable. All the talent required, is to be heady, to be violent on one side or the other. Temple.
2. Apt to affect the head; inflaming; intoxicating; strong; as spirituous liquors. Champagne is a heady wine.
3. Violent; impetuous; as, a heady current. [Not usual.] Shak.