Brocken specter
- an optical phenomenon sometimes occurring at high altitudes when the image of an observer placed between the sun and a cloud is projected on the cloud as a greatly magnified shadow.
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Origin of Brocken specter
First recorded in 1920–25; see origin at Brocken bow
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018