/ˈsʌmə(r) ||; ˈsʌmɚ/noun [C,U] one of the four seasons of the year, after spring and before autumn. Summer is the warmest season of the year 夏天；夏季: Is it very hot here in summer ? 这儿夏天很热吗？a summer's day 夏日 ☞picture at season 见season插图 ➔summery adj summery weather 夏季的天气a summery dress 夏装