Dublin's Merchant's ...; London's Marble ... (4)

I believe the answer is:

arch

(Other definitions for arch that I've seen before include "Chief - supporter - cunning" , "Teasing; part of foot" , "Supporting structure" , "Curved aperture" , "Affectedly playful like senior angel" .)

I've seen this clue in The Irish 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.