blank \blank\, v. t. imp.  p. p. blanked; p. pr.  vb. n.
   blanking. cf. 3d blanch.
   1. to make void; to annul. obs. --spenser.
      1913 webster

   2. to blanch; to make blank; to damp the spirits of; to
      dispirit or confuse. obs.
      1913 webster

            each opposite that blanks the face of joy. --shak.
      1913 webster
see also:
blanked blanking blanch