The Collaborative International Dictionary of English v.0.48:

Blood-boltered \Blood"-bol`tered\, a. [Blood + Prov. E. bolter
   to mat in tufts. Cf. Balter.]
   Having the hair matted with clotted blood. [Obs. & R.]
   [1913 Webster]

         The blood-boltered Banquo smiles upon me. --Shak.
   [1913 Webster]