Definition of "northern lights" [northern lights]

• See aurora borealis. (noun-plural)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The northern lights flame in the sky, and the sun-dogs dance, and the air is filled with frost-dust."
• "There were no tapers to be seen, but northern lights shot up into the dark blue sky, and just over the fir-tree shone a bright, bright star."