comet

/ˈkɒmət/

IPA: /K AA1 M AH0 T/

noun
  1. 1

    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.

  2. 2

    A celestial phenomenon with the appearance given by the orbiting celestial body.

  3. 3

    Any of several species of hummingbird found in the Andes.

Synonyms

Source: https://en.wiktionary.org/wiki/comet