n, adj
1 (boxer) weighing between
57 and
61 kg, next above featherweight 轻量级的（拳击手）（体重在57和61公斤之间, 在次轻量级之上）
*the European lightweight champion 欧洲轻量级拳击冠军.
2 (infml 口) (person or thing) of little influence or importance 无足轻重的（人或物）
*a political lightweight 政治上的无名之辈
* a lightweight news item 不重要的消息.