Handy restrictions (8)

I believe the answer is:

manacles

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

'handy restrictions' is the definition.
Although both the answer and definition are plural nouns, I cannot see how one could define the other.

This is all the clue.

Can you help me to learn more?

(Other definitions for manacles that I've seen before include "Fetters for the hands" , "Shackles for the wrist" , "chains" , "Handcuffs" .)

I've seen this clue in the Evening Standard.

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.