The Collaborative International Dictionary of English v.0.48:

Tail \Tail\, n. [F. taille a cutting. See Entail, Tally.]
   (Law)
   Limitation; abridgment. --Burrill.
   [1913 Webster]

   Estate in tail, a limited, abridged, or reduced fee; an
      estate limited to certain heirs, and from which the other
      heirs are precluded; -- called also estate tail.
      --Blackstone.
      [1913 Webster]