Definition of free soil in English:

free soil

noun

US
Politics
historical
  • Territory in which slaveholding is prohibited; an example of this. Chiefly with reference to the views and activities of the Free Soil party.

adjective

US
Politics
historical
  • Of or relating to (advocacy of) the prohibition of slavery. Especially in the name of or with reference to the "Free Soil Party" (active 1848–54), which campaigned on the platform that slavery should not be permitted in United States territory.

Origin

Mid 19th century; earliest use found in Subterranean & Working Man's Advocate. From free + soil.

Pronunciation

free soil

/ˌfriː ˈsɔɪl/