The Collaborative International Dictionary of English v.0.48:

Tar \Tar\, v. t. [imp. & p. p. Tarred; p. pr. & vb. n.
   Tarring.]
   To smear with tar, or as with tar; as, to tar ropes; to tar
   cloth.
   [1913 Webster]

   To tar and feather a person. See under Feather, v. t.
      [1913 Webster]