portcullis

详细解释:n. 吊闸
vt. 给...装吊闸, 用吊闸关闭

英语解释：

名词 portcullis:

gate consisting of an iron or wooden grating that hangs in the entry to a castle or fortified town; can be lowered to prevent passage

详细解释：

port.cul.lis

n.（名词）
A grating of iron or wooden bars or slats, suspended in the gateway of a fortified place and lowered to block passage.
格子吊闸：由铁条、木条或其板条组成的闸门，悬于一城堡的入口处，可降下而堵住入口通道

来源：
Middle English port-colice
中古英语 port-colice
from Old French porte coleice [sliding gate]
源自 古法语 porte coleice [滑门]
porte [gate] from Latin porta * see per- 2
porte [门] 源自 拉丁语 porta *参见 per- 2
coleice [feminine of] coleis [sliding] from Vulgar Latin *côl3tocius from Latin côl3tus [past participle of] côl3re [to filter, strain] from côlum [sieve]
coleice [] coleis的阴性词 [滑动] 源自 俗拉丁语 *côl3tocius 源自 拉丁语 côl3tus [] côl3re的过去分词 [渗入，拉紧] 源自 côlum [滤]