Metal bars used in grilling (which can get locked) (4)

I believe the answer is:

grid

(Other definitions for grid that I've seen before include "Crossword pattern" , "Network of crossing parallel lines" , "entries in this" , "Bars used to make one" , "Rectangular network" .)

I've seen this clue in The Guardian.

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.