Maiden's assistant (4)

I believe the answer is:

aide

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

'assistant?' is the definition.
(aide is a kind of assistant)

I don't understand how the rest of the clue works.

(Other definitions for aide that I've seen before include "Adviser or assistant" , "Helper" , "a help" , "Leader's assistant" , "Confidential assistant or advisor" .)

I've seen this clue in The Mirror.

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.