名詞 portcullis:

1. 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

port.cul.lis

n.（名詞）
A grating of iron or wooden bars or slats, suspended in the gateway of a fortified place and lowered to block passage.
格子吊閘：由鐵條、木條或其板條組成的閘門，懸于一城堡的入口處，可降下而堵住入口通道

來源：
Middle English port-colice
中古英語 port-colice
from Old French porte coleice [sliding gate]
源自 古法語 porte coleice [滑門]
porte [gate] from Latin porta * see per- 2
porte [門] 源自 拉丁語 porta *參見 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的陰性詞 [滑動] 源自 俗拉丁語 *côl3tocius 源自 拉丁語 côl3tus [] côl3re的過去分詞 [滲入，拉緊] 源自 côlum [濾]