{ 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.
[1913 Webster]