Stimulator of Vitamin D production (3)

I believe the answer is:

sun

(Other definitions for sun that I've seen before include "Bask" , "Nice weather" , "Centre of a solar system" , "Hub of our planetary system" , "Dawn riser" .)

I've seen this clue in the LA Times.

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.