Heyday

Etymology
Late 16th century, from earlier heyda: (1520s), as exclamation – compare hey:, {{term|hei|lang=enm|}. Sense “period of success, vigor” from 1751, which respelt as heyday based on unrelated day: (as “period of time”) – compare day in the sun:.

Noun

 * 1) A period of success, popularity or power; prime.
 * The early twentieth century was the heyday of the steam locomotive.

Translations

 * Danish: blomstringstid, storhedstid,  velmagtsdage
 * Dutch: ,
 * Manx: ard-laa


 * Portuguese:
 * Spanish:
 * Swedish: glansdag

Interjection

 * 1) A lively greeting.
 * 2) * 1798:"Heyday, Miss Morland!" said he. "What is the meaning of this? I thought you and I were to dance together." Jane Austen - Northanger Abbey