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Meaning of free-bored

free-bored

Pronunciation: (frē'bôrd', -bōrd'), [key]
— adj.
  1. (of a rifle) having a bore that is not rifled within a short distance of the breech, so that a fired cartridge travels about in. (1.3 cm) before being engaged by the lands, thus reducing initial high pressures.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.