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1. Prohibiting slavery: free-soil states.
a. Opposing the extension of slavery before the US Civil War.
b. Free-Soil Of or being a US political party founded in 1848 to oppose the extension of slavery into US territories and the admission of slave states into the Union.
Free′-Soil′er (-soi′lər) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a U.S. territory in which slavery was forbidden before the Civil War.
adj. (sometimes l.c.)
1. opposing the extension of slavery into U.S. territories before the Civil War.
2. pertaining to or characteristic of the Free Soil Party.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.