comet
Pronunciation:
/ˈkɒmət/noun
Definitions
A celestial body consisting mainly of ice, dust and gas in a (usually very eccentric) orbit around the Sun and having a "tail" of matter blown back from it by the solar wind as it approaches the Sun.
A celestial phenomenon with the appearance given by the orbiting celestial body.
Any of several species of hummingbird found in the Andes.