Tree; of a greater age (5)

I believe the answer is:

elder

(Other definitions for elder that I've seen before include "More senior in years" , "Official of some Churches, or senior statesman" , "more mature" , "Layman of the church" , "Older person - one's senior" .)

I've seen this clue in The 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.