walloper : Idioms & Phrases

• noun a laborer who loads and unloads vessels in a port
  dock worker; lumper; dockhand; loader; stevedore; dockworker; docker; longshoreman.
  

WordNet

Pot"-wal`lop*er noun

Definitions

1. A voter in certain boroughs of England, where, before the passage of the reform bill of 1832, the qualification for suffrage was to have boiled (walloped) his own pot in the parish for six months.
2. One who cleans pots; a scullion. Slang, U. S.

Webster 1913