blast off

1. (idiomatic, intransitive)To begin ascent under rocket power

2. (intransitive, slang)To get high on drugs.

3. (intransitive, slang)To ejaculate; to orgasm.

4. (intransitive, slang)To depart.

1. The blast-off took place on schedule.

   ruСтарт ракеты произошёл по расписанию.

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2. The rocket blasted off into the atmosphere.

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3. Mark Shuttleworth and two crewmates landed on schedule on the steppes of Kazakhstan, near where they blasted off 10-days ago.

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4. A U.S.-Russian space crew blasted off for the International Space Station (ISS) Thursday from Russia's Baikonur Cosmodrome in Kazakhstan.

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irregular

• blast upTo shoot (someone), especially to kill.
• blast offTo begin ascent under rocket power
• blast outTo produce loud music or noise
• blast awayTo destroy by blasting with explosives.