0 a game or joke that makes people who do not know each other feel more relaxed together --
1 a strong ship that can break a passage through ice --
2 a strong ship that can move through ice --
3 a game, joke, or story that makes people who do not know each other feel more comfortable together --
Since the lake freezes in winter, an ice-breaker would be required to keep the ferry services running.
The port will not be ice-free year around, but will nevertheless operate without interruption by using icebreakers during winter.
In the late 1970s, the first post-war icebreakers were approaching either mid-life update or retirement.
Nuclear reactors producing steam are used to propel warships and icebreakers, and there have been attempts to utilize them to power commercial vessels.
In the 19th century, similar protective measures were adopted to modern steam-powered icebreakers.
At the beginning of the 20th century, several other countries began to operate purpose-built icebreakers.
The department had acquired since 1891 a force of eight armed cruisers, six icebreakers, and nearly twenty other vessels.
She was a forerunner of modern icebreakers and had an exceptionally diverse service life.
