Sweden is NATO's newest one (6)

I believe the answer is:

member

(Other definitions for member that I've seen before include "One of a group or club" , "One belonging to a club" , "Limb - element - one in society" , "Limb, MP" , "Limb - one that belongs" .)

I've seen this clue in the USA Today.

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.