A defensive castle gate (10)

I believe the answer is:

portcullis

(Other definitions for portcullis that I've seen before include "Raisable grating across castle gateway" , "entrance to historic building" , "Castle gate" , "feature of castle" , "Grating in fortified gateway" .)

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.