Noun: icebreaker 'Is,brey-ku(r)
- A ship with a reinforced bow to break up ice and keep channels open for navigation
"The icebreaker cleared a path through the frozen Arctic waters";
- iceboat
- A beginning that relaxes a tense or formal atmosphere
"he told jokes as an icebreaker"
Derived forms: icebreakers
Type of: beginning, commencement, ship, start
Encyclopedia: Icebreaker