1747 W. HoosonMiners Dict. sig. KivbKeckle-Meckle. The poorest kind of mines that yields Ore, and the Ore is of the poorest sort... Keckle-Meckle Stuff has the Ore run with it in small Strings and Races, or spotted with it much like Birds Eyes.
This entry has not yet been fully updated (first published 1901; most recently modified version published online June 2018).