n.

1. 围攻；包围；围城[C][U]
   The insurrectionary army laid siege to the capital.

   起义军围攻京城。

2. 【美】（疾病等的）长期折磨；（灾祸等的）不断袭击[C]
   a siege of illness

   疾病的长期折磨

3. 劫持[C]
   After an 18-hour siege, the police stormed the house and captured the gunman.

   武装劫持十八小时之后，警方袭击了那所房子并抓获了持枪罪犯。

vt.

1. 围攻；围困

n.

1. a military operation in which enemy forces surround a town or building, cutting off essential supplies, with the aim of compelling the surrender of those inside.
2. a similar operation by a police team to compel the surrender of an armed person.