Source : Webster's Revised Unabridged Dictionary (1913)

Wassail \Was"sail\, a.
   Of or pertaining to wassail, or to a wassail; convivial; as,
   a wassail bowl. ``Awassail candle, my lord, all tallow.''
   --Shak.

   {Wassail bowl}, a bowl in which wassail was mixed, and placed
      upon the table. ``Spiced wassail bowl.'' --J. Fletcher.
      ``When the cloth was removed, the butler brought in a huge
      silver vessel . . . Its appearance was hailed with
      acclamation, being the wassail bowl so renowned in
      Christmas festivity.'' --W. Irving.

   {Wassail cup}, a cup from which wassail was drunk.