Wiktionary
ice breaker
n. (alternative spelling of icebreaker English)
Wikipedia
Ice Breaker (video game)
Ice Breaker is a puzzle game by Nitrome Limited, released on Miniclip on January 5, 2009. Ice Breaker: The Red Clan and Ice Breaker: The Gathering were sequels released afterwards. An iOS adaption entitled Icebreaker: A Viking Voyage was developed by Rovio Stars Ltd. and released June 20, 2013.
Usage examples of "ice breaker".
So was the ice breaker _Dvina_ when it tried to smash its way through here a few days ago.
He watched the ice breaker gnawing through, cutting a jagged path of black water.
The van with its oversized tires was an ice breaker on a frozen sea.