"loader" in the noun sense
1. stevedore, loader, longshoreman, docker, dockhand, dock worker, dockworker, dock-walloper, lumper
a laborer who loads and unloads vessels in a port
an attendant who loads guns for someone shooting game
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License