launcher

/ˈlɔntʃər/
noun
  1. A device or machine that sends something into the air or forward, such as a rocket, missile, or projectile.
    • The tennis ball launcher helps players practice their swings.
    • A grenade launcher can be attached to some rifles.
    • The soldiers carried a portable rocket launcher on their shoulders.
  2. A person or thing that starts or introduces something new.
    • She was the launcher of the community recycling program.
    • The company is a well-known launcher of innovative tech products.
    • He acted as the launcher of the charity fundraising campaign.
  3. A software program that starts other programs or applications.
    • You can customize the launcher to show your favorite software.
    • I use a game launcher to organize all my computer games.
    • The app launcher on my phone lets me open programs quickly.
Antonyms
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