lumper luhm per n a laborer who loads and unloads vessels in a port n a taxonomist who classifies organisms into large groups on the basis of major characteristics Usage(s) That year, the Labor Party formed its first majority government, a cabinet consisting of two miners, a wharf lumper, a building worker, a hatter, a compositor, an engine driver . Synonym(s) stevedore loader longshoreman docker dockhand dock worker dockworker dock-walloper Antonym(s) splitter