Mortar used between tiles (5)

I believe the answer is:

grout

(Other definitions for grout that I've seen before include "cement" , "plaster" , "Thin mortar for filling building joints etc" , "Grub" , "Fill the cracks" .)

I've seen this clue in the Sydney Morning Herald.

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.