interj. 嘿



heyday
[ noun ]
the period of greatest prosperity or productivity
<noun.time>




Heyday \Hey"day`\, interj. [Cf. G. heida, or hei da, D. hei
daar. Cf. {Hey}, and {There}.]
An expression of frolic and exultation, and sometimes of
wonder. --B. Jonson.


Heyday \Hey"day`\, n. [Prob. 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. --Shak.

In the heyday of their victories. --J. H.
Newman.