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the aurora borealis

noun [S]
 
 
/əˌrɔː.rə.bɒr.iˈeɪ.lɪs/ US  /-ˌrɔːr.ə.bɔːr.iˈæl.ɪs/ (also the Northern Lights)

Definition

a pattern of differently coloured lights that are sometimes seen in the night sky in the most northern parts of the world → Compare the aurora australisWeather and climate - general words
(Definition of the aurora borealis noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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