Source : Webster's Revised Unabridged Dictionary (1913)

Seizin \Sei"zin\, n. [F. saisine. See {Seize}.]
   1. (Law) Possession; possession of an estate of froehold. It
      may be either in deed or in law; the former when there is
      actual possession, the latter when there is a right to
      such possession by construction of law. In some of the
      United States seizin means merely ownership. --Burrill.

   2. The act of taking possession. [Obs.]

   3. The thing possessed; property. --Sir M. Halle.

   Note: Commonly spelt by writers on law seisin.

   {Livery of seizin}. (Eng. Law) See Note under {Livery}, 1.