launchpad

2. A starting point that helps someone begin something new, like a career or project.

Her first job was a launchpad for a successful career in science.

3. A button or icon on a computer or phone that opens an app or program.

Tap the launchpad icon to open all your apps at once.

4. A platform used to send something into the air, such as fireworks or model planes.

The kids set up a launchpad in the backyard for their toy rockets.