portcullis

noun

1. （城堡入口可升降的）铁闸门，吊闸门
   a strong, heavy iron gate that can be raised or let down at the entrance to a castle

1. （城堡的）吊门，吊闸
   A portcullis is a strong gate above an entrance to a castle and used to be lowered to the ground in order to keep out enemies.

1. After the barrels are eventually stopped at a gate, which is something that doesn't happen in the books, Kili attempts to raise the portcullis and is shot with a poison arrow from an orc.
   在木桶最终停在大门口时（这在书中是没有的情节），奇力试图拉起吊闸，而受到了半兽人毒箭的攻击。
2. Begging him to leave this terrible place, she breaks away just in time before the rapidly closing portcullis closes in on her.
   公主请求王子赶快离开这个可怕的地方之后，及时地在铁闸门掉下之前跑进了城堡。

noun

1. gate consisting of an iron or wooden grating that hangs in the entry to a castle or fortified town