- 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
- 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