n.[C]

1. 長矛
2. 長矛騎兵
3. 魚叉

vt.

1. 用矛刺穿
2. 【醫】用柳葉刀割開
   The doctor lanced the boil.

   醫生用柳葉刀切開癤子。

vi.

1. 急速前進

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.