- splitter - a worker who splits fish and removes the backbone
 --1 is a kind of worker
 Derived form: verb split2 
- splitter, divider - a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics
 --2 is a kind of taxonomist, taxonomer, systematist
 Antonyms: lumper
 
- rail-splitter, splitter - a laborer who splits logs to build split-rail fences
 --3 is a kind of laborer, manual laborer, labourer, jack
 Derived form: verb split2