HEYDAY
    
Meaning of HEYDAY in English
	
n.
Pronunciation: ' h ā - ˌ d ā
 Function: interjection
 Etymology: irregular from hey
 Date: 1599
archaic ― used to express elation or wonder
	
	
	Merriam Webster Collegiate English Dictionary.
    	Merriam Webster - Энциклопедический словарь английского языка.
	2012