noun
A solid piece of debris from an object such as a comet, asteroid, or meteoroid that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon.
昨夜、隕石が落ちるのが見えた。
Last night, I saw a meteorite fall.
博物館に大きな隕石が展示されている。
A large meteorite is on display at the museum.
From Middle Chinese 隕石 (MC hwinX dzyek, literally 'falling stone'). The kanji 隕 means 'fall' and 石 means 'stone'.