E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Mammet.
A puppet, a favourite, an idol. A corruption of Mahomet. Mahometanism being the most prominent form of false religion with which Christendom was acquainted before the Reformation, it became a generic word to designate any false faith; even idolatry is called mammetry.
