Definition of Macle:

part of speech: noun

Another name for chiastolite, from the twin form of its crystals.

Usage examples:

• After chatting a bit, Captain von Tappken made an appointment with me at his bureau in the Koenigergratzerstrasse 70, the headquarters of the Intelligence Department of the Imperial Navy in Berlin, but macle no further reference to the subject that afternoon. Dr. Armgaard Karl Graves in "The Secrets of the German War Office".