a riddle in which the change of the initial letter produces a series
of words of different meanings; from _meta_, implying change, and
_gramma_, a letter. Thus:
I cover your head; change my head, and I set you to sleep; change it
again and again, and with every change comes a new idea.--Cap, Nap,
Gap, Sap, Hap, Map, Lap, Pap, Rap, Tap. This kind of riddle is also
known as word-capping.
[GUNPOWDER MADE BY A MONK AT COLOGNE A.D.1330.]