Family members in good order? (7)

I believe the answer is:

sisters

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

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

I don't understand the rest of the clue.

(Other definitions for sisters that I've seen before include "Family relatives" , "Nuns - nurses - siblings" , "Nuns' titles" , "Aunts may be" , "Patient attention required from such" .)

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.