Authorise one to catch a wriggling fish outside (6)

I believe the answer is:

enable

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

'authorise' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for enable that I've seen before include "Authorise" , "Render capable" , "Permit or facilitate" , "Capacitate" , "Make it possible for someone to do something" .)

I've seen this clue in The Globe and Mail.

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.