adjective U.S. History.
  1. pertaining to or opposing the extension of slavery in the Territories.
  2. pertaining to or characteristic of the Free Soil party.

Origin of free-soil

An Americanism dating back to 1840–50
Related formsfree-soil·ism, noun

free soil

noun U.S. History.
  1. a region, especially a U.S. territory, prohibiting slavery prior to the Civil War.

Origin of free soil

An Americanism dating back to 1840–50 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for free-soil

Historical Examples of free-soil