Webster's Revised Unabridged Dictionary · 1913

Monger

Monger , noun

[Anglo-Saxon mangere, from mangian to trade; akin to Icelandic manga to trade, mangari a trader, Old High German mangari, mengari; compare Latin mango a dealer in slaves.]

1.
A trader; a dealer; -- now used chiefly in composition; as, fishmonger, ironmonger, newsmonger.
2.
A small merchant vessel. [Obsolete] — Blount

Monger , transitive verb

To deal in; to make merchandise of; to traffic in; -- used chiefly of discreditable traffic.