Heyday
Heyday , interjection
[Compare German heida, or hei da, Dutch hei daar. Compare Hey, and There.]
An expression of frolic and exultation, and sometimes of wonder. — B. Jonson
Heyday , noun
[Probably for. high day. See High, and Day.]
The time of triumph and exultation; hence, joy, high spirits, frolicsomeness; wildness.
The heyday in the blood is tame.
In the heyday of their victories.