portcullis

n.

铁闸门，吊闸；

vt.

给…装吊闸；

复数：portcullises

1. Most gateways had a metal grill called a portcullis.
   大多数通道上都装有叫作吊闸的铁格栅。

Portcullis
RAISING THE PORTCULLIS
"Trade Marks: Portcullis for the EEA?"
Portcullis:protecting connection setup from denial-of-capability attacks
Construction of Portcullis House, the New Parliamentary Building
Raising the portcullis: some notes after having cataracts removed from my eyes.
Raising the portcullis: some notes after having cataracts removed from my eyes COMMENTARY
EGYPT. AN UNKNOWN PORTCULLIS TYPE IS DISCOVERED IN THE BENT PYRAMID OF SNEFERU IN DUSHORE
Raising the portcullis: repeal of the National Dock Labour Scheme and the employment relationship in the docks industry
Magnetic properties of nonamanganese(II) 3×3 portcullis-like grid generated by strict self assembly of metal cation and heptadentat...