icebreaker
/ˈaɪsˌbreɪkɚ/
noun
plural
icebreakers
plural
icebreakers
Britannica Dictionary definition of ICEBREAKER
[count]
1
:
a ship designed to clear a passage through ice
2
:
something done or said to help people to relax and begin talking at a meeting, party, etc.
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see also break the ice at 1ice