Noun lumper has 2 senses
  1. stevedore, loader, longshoreman, docker, dockhand, dock worker, dock-walloper, lumper - a laborer who loads and unloads vessels in a port
    --1 is a kind of laborer, manual laborer, labourer, jack
  2. lumper - a taxonomist who classifies organisms into large groups on the basis of major characteristics
    --2 is a kind of
    taxonomist, taxonomer, systematist
    Antonyms: splitter, divider
    Derived form: verb lump2
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