n.[C]

1. 长矛
2. 长矛骑兵
3. 鱼叉

vt.

1. 用矛刺穿
2. 【医】用柳叶刀割开
   The doctor lanced the boil.

   医生用柳叶刀切开疖子。

vi.

1. 急速前进

n.

1. a long weapon with a wooden shaft and a pointed steel head, formerly used by a horseman in charging.
2. a similar weapon used in hunting fish or whales.
3. a metal pipe supplying a jet of oxygen to a furnace or to make a very hot flame for cutting.

v.

1. Medicine  prick or cut open with a sharp instrument.
2. pierce with or as if with a lance.
3. move suddenly and quickly.