• n. 全盛期
• int. 嘿！（表喜悅或驚奇等）

來自感嘆詞heyda,表示驚嘆，驚訝，后拼寫俗化為day.引申詞義盛世，全盛時期。

heyday

heyday: [16] Etymologically, the -day of heyday has no connection with the English noun day, although it has come to resemble it over the centuries. Nor is hey- related to hay. Originally the word was heyda, an exclamation roughly equivalent to modern English hurrah. Probably it was just an extension of hey, modelled partly on Low German heida ‘hurrah’. Its earliest noun use (first recorded in the 1590s) was in the sense ‘state of exultation’; the influence of the day-like second syllable did not make itself felt until the mid-18th century, when the modern sense ‘period of greatest success’ began to emerge.

heyday (n.)

late 16c., alteration of heyda (1520s), exclamation of playfulness or surprise, something like Modern English hurrah, apparently an extended form of Middle English interjection hey or hei (see hey). Modern sense of "stage of greatest vigor" first recorded 1751, which altered the spelling on model of day, with which this word apparently has no etymological connection.

1. In its heyday , the company ran trains every fifteen minutes.

公司在最興隆時期每隔十五分鐘就開出一列火車。

來自《權威詞典》

2. By the 80 s, punk rock had really had its heyday.

到了20世紀80年代, 朋克搖滾樂已經到了全盛時期.

來自《簡明英漢詞典》

3. The 19 th century was the heyday of steam railways.

19世紀是蒸汽機車鼎盛的時代.

來自《現代漢英綜合大詞典》

4. The rooms are furnished and recreate the atmosphere of the castle's medieval heyday.

房間都進行了布置，重新營造出該城堡中世紀全盛時期的氛圍。

來自柯林斯例句

5. Docklands in its heyday was a major centre of industrial and commercial activity.

港區在其最繁榮的時期曾是主要的工商業活動中心。

來自柯林斯例句