Give free ___ (not restrict) (4)

I believe the answer is:

rein

(Other definitions for rein that I've seen before include "leading article?" , "Controlling strap" , "A means of control" , "Restraining lead" , "Director's power" .)

I've seen this clue in the Universal.

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.