Activity to get strangers talking (10)

I believe the answer is:

icebreaker

(Other definitions for icebreaker that I've seen before include "Chatty partygoer without reserve" , "Reinforced vessel" , "Ship clearing channel" , "Something relieving initial tension" , "Something helping to start a conversation" .)

I've seen this clue in The Guardian.

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.