n. A period of success, popularity or power; prime.
interjection. A lively greeting.
the GNU version of the Collaborative International Dictionary of English
interjection. An expression of frolic and exultation, and sometimes of wonder.
n. The time of triumph and exultation; hence, joy, high spirits, frolicsomeness; wildness.
The Century Dictionary and Cyclopedia
An exclamation of cheerfulness, surprise, wonder, etc.
n. Highest vigor; full strength; acme.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the period of greatest prosperity or productivity
Word Usage
"He was a man no longer young, but in what we call the heyday of life, when our own people are so absorbed in making provision for the future that they may be said not to live in the present at all."