Definitions

1. noun

relating to or resembling the aurora borealis or aurora australis; pertaining to the northern or southern lights

“The borealis display in the night sky was breathtakingly beautiful.”

2. adjective

relating to or resembling the aurora borealis or aurora australis; pertaining to the northern or southern lights

“The borealis pattern on the dress was a unique design choice.”

3. proper noun

Aurora Borealis or the northern lights, a natural light display in the polar regions

“The scientists studied the aurora borealis to understand its formation.”