Blunder removing restraint, finally, from rogue (5)

I believe the answer is:

error

I'm a little stuck... Click here to teach me more about this clue!

'blunder' is the definition.
(I know that blunder can be written as error)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for error that I've seen before include "Bloomer, blunder" , "Faulty judgement" , "Miscarriage of justice" , "1 down" , "wrongdoing" .)

I've seen this clue in The Telegraph.

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.