lance

1. V-T If a boil on someone's body is lanced, a small cut is made in it so that the liquid inside comes out. 切开 (放脓)[医学] [usu passive]

It is a painful experience having the boil lanced. 将疖子切开是个痛苦的经历。

2. N-COUNT A lance is a long spear used in former times by soldiers on horseback. 长矛

...the clang of lances striking armour. …长矛撞击盔甲的铿锵声。