Definition of mopus in English:

mopus

noun

rare, slang, archaic
  • A coin of small value; a halfpenny; a farthing; (in plural) money.

Origin

Late 17th century. Origin uncertain; perhaps related to Dutch moppen (plural) money, or German Möpse (plural, colloquial) money (perhaps specifically use of Mops).

Pronunciation

mopus

/ˈməʊpəs/