Hold the ---, briefly take charge (4)

I believe the answer is:

fort

(Other definitions for fort that I've seen before include "Garrison" , "Defensive stronghold" , "Citadel" , "castle, perhaps" , "William in Scotland" .)

I've seen this clue in The 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.