Here's a breakdown of the terminology:

* Meteoroid: A small, rocky or metallic body in space.

* Meteor: The bright streak of light produced when a meteoroid enters Earth's atmosphere and burns up due to friction. (Also known as a "shooting star".)

* Meteorite: A meteoroid that survives its fiery journey through the atmosphere and lands on Earth's surface.

So, the rock itself is a meteoroid, but the fiery streak it produces is a meteor, and the surviving piece that hits the ground is a meteorite.