noun (n)

• a laborer who loads and unloads vessels in a port(noun.person)

  Synonym:
  dock worker, dock-walloper, docker, dockhand, dockworker, loader, longshoreman, stevedore
  

  source: wordnet30
• a taxonomist who classifies organisms into large groups on the basis of major characteristics(noun.person)

  Antonym:
  divider, splitter
  

  source: wordnet30
• The European eelpout; -- called also lumpen.(noun)

  source: webster1913
• One who lumps.(noun)

  source: webster1913