heyday

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++hey·day /ˈheɪdeɪ/ noun [countable usually singular]  PERIOD OF TIMEPOPULARthe time when someone or something was most popular, successful, or powerful 最兴盛[最成功，最强大]的时期in somebody’s heyday Greta Garbo in her heyday 巅峰时期的葛丽泰•嘉宝

Examples from the Corpus

heyday• The huge sell-out reformation shows earlier this year were something they never achieved in their chart heyday.• However, its culinary heyday came to an end with the approach of the Napoleonic wars.• In his heyday a driving but discreet drummer, he specialized in playing with brushes rather than sticks.• The building had originally been a manor house and must have looked beautiful in its heyday.• In its heyday it must have been a good little vehicle, but now it was definitely finished.• In its heyday it was so popular long queues built up outside its shops.• Yet this is the first serious attempt to write about the revolution since the heyday of the early 1970s.• The pair crossed swords in the eighties during their heyday with rivals Liverpool and United.Origin heyday (1500-1600) heyda a shout of happiness ((16-17 centuries)); influenced by day

hey·day nounChineseSyllable  

Corpus or most someone the something was time popular, successful, when

heyday
hey‧day /ˈheɪdeɪ/ noun [countable usually singular]the time when someone or something was most popular, successful, or powerful
    in sb’s heyday
    Greta Garbo in her heyday

hey·dayBrE /ˈheɪdeɪ/ 🔊NAmE /ˈheɪdeɪ/ 🔊 noun [usually singular] the time when sb/sth had most power or success, or was most popular 最为强大（或成功、繁荣）的时期 SYN prime ◆In its heyday, the company ran trains every fifteen minutes. 公司在最兴隆时期每隔十五分钟就开出一列火车。🔊🔊◆a fine example from the heyday of Italian cinema意大利电影业全盛期的一部优秀代表作◆a picture of Brigitte Bardot in her heyday碧姬 · 芭铎事业鼎盛时的一张照片