The Collaborative International Dictionary of English v.0.48:

Bierbalk \Bier"balk`\ (b[=e]r"b[add]k`), n. [See Bier, and
   Balk, n.]
   A church road (e. g., a path across fields) for funerals.
   [Obs.] --Homilies.
   [1913 Webster] Biestings