'Mountain specter' definitions:

Definition of 'Mountain specter'

From: GCIDE

Mountain specter \Moun"tain spec"ter\ An optical phenomenon sometimes seen on the summit of mountains (as on the Brocken) when the observer is between the sun and a mass of cloud. The figures of the observer and surrounding objects are seen projected on the cloud, greatly enlarged and often encircled by rainbow colors. [Webster 1913 Suppl.]