plodder
1. [ noun ] someone who works slowly and monotonously for long hours
Synonyms: slogger
Related terms: hack plug_away
2. [ noun ] someone who walks in a laborious heavy-footed manner
Synonyms: trudger slogger
Related terms: pedestrian slog
3. [ noun ] (work) someone who moves slowly
Synonyms: stick-in-the-mud slowcoach slowpoke
Examples:

"in England they call a slowpoke a slowcoach"

Related terms: dawdler slog
Similar spelling:   pleader
  plater
  plotter
  platter
  Platero
  plaiter