A joint, but it could be fruit (3)

I believe the answer is:

hip

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

'be fruit' is the definition.
(fruit of a rose plant)

I don't understand the rest of the clue.

(Other definitions for hip that I've seen before include "Fruit of a rose plant" , "Side of body - very sophisticated" , "Fashionable" , "Rose fruit; start of cheer" , "Body part; cool" .)

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.