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heyday
hey·day [ háy dày ]


noun 
Definition:
 
somebody's or something's prime: the time of somebody's or something's greatest success, popularity, or power
[Late 16th century. < obsolete heyda "hurrah," origin ?, by association with day]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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