Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun icebreaker

2 senses of icebreaker

Sense 1
icebreaker, iceboat -- (a ship with a reinforced bow to break up ice and keep channels open for navigation)
       => ship -- (a vessel that carries passengers or freight)

Sense 2
icebreaker -- (a beginning that relaxes a tense or formal atmosphere; "he told jokes as an icebreaker")
       => beginning, start, commencement -- (the act of starting something; "he was responsible for the beginning of negotiations")