Definition of rail-splitter in English:

rail-splitter

noun

US
  • A person who splits wood for rails, especially for use in fencing. Frequently in "the (great,also old) rail-splitter": Abraham Lincoln. Hence: = "republican".

Origin

Mid 19th century; earliest use found in William Simms (1806–1870), poet, novelist, and historian. From rail + splitter.

Pronunciation

rail-splitter

/ˈreɪlˌsplɪtə/