"Are there more wheels or ___ in the world?" (viral question) (5)

I believe the answer is:

doors

(Other definitions for doors that I've seen before include "Entrance barriers" , "Barriers to entrances" , "Openings" , "Swinging or sliding barriers" , "Portals" .)

I've seen this clue in the Universal.

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.