1. An exclamation of joy, surprise, or encouragement. Shak.

2. A cry to set dogs on. Shak.

HEYDAY
Hey"day`, interj. Etym: [Cf. G. heida, or hei da, D. hei daar. Cf.
Hey, and There.]

Defn: An expression of frolic and exultation, and sometimes of wonder. B. Jonson.

HEYDAY
Hey"day`, n. Etym: [Prob. for. high day. See High, and Day.]

Defn: The time of triumph and exultation; hence, joy, high spirits,
frolicsomeness; wildness.
The heyday in the blood is tame. Shak.
In the heyday of their victories. J. H. Newman.

HEYDEGUY
Hey"de*guy, n. Etym: [Perh. fr. heyday + guise.]

Defn: A kind of country-dance or round. [Obs.] Spenser.

HEYH; HEYGH
Heyh, Heygh (, a.

Defn: High. [Obs.] Chaucer.