Source : Webster's Revised Unabridged Dictionary (1913)

Vaginant \Vag"i*nant\, a. [Cf. F. vaginant. See {Vagina}.]
   Serving to in invest, or sheathe; sheathing.

   {Vaginant leaf} (Bot.), a leaf investing the stem or branch
      by its base, which has the form of a tube.