n
1 boxer weighing 79.3kg or more; next above light-heavyweight 重量级拳击手（体重79.3公斤以上, 仅高于次重量级）
*[attrib 作定语] a heavyweight contest 重量级拳击比赛.
2 person of more than average weight 超过平均体重的人.
3 (fig 比喻) person of great influence or importance 有影响的人物; 要人
*a literary heavyweight 文坛巨匠.

n[C]
someone or something that is very important or has a lot of influence
　one of the heavyweights of the movie industry
a boxer who weighs more than 86.18 kilograms, and who belongs to the heaviest weight class of boxers