Frankpledge ,
n. [Frank free + pledge.] (O. Eng. Law) (a) A pledge or surety for the good behavior of freemen, -- each freeman who was a member of an ancient decennary, tithing, or friborg, in England, being a pledge for the good conduct of the others, for the preservation of the public peace; a free surety. (b) The tithing itself.Bouvier.
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The servants of the crown were not, as now, bound in frankpledge for each other.
Macaulay.
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{ Friborg , Friborgh } ,
n. [AS. friðborh, lit., peace pledge; frið peace + borh, borg, pledge, akin to E. borrow. The first part of the word was confused with free, the last part, with borough.] (Old Eng. Law) The pledge and tithing, afterwards called by the Normans frankpledge. See Frankpledge. [Written also friburgh and fribourg.]Burril.
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