01 a. Pertaining to, or advocating, the non-extension of slavery; -- esp. applied to a party which was active during the period 1846-1856.
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1.
Pertaining to, or advocating, the non-extension of slavery; -- esp. applied to a party which was active during the period 1846-1856.[U.S.]
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2.
Pertaining to territory where slavery was prohibited.[U.S.]
Syn.
slaveless.