Source : Webster's Revised Unabridged Dictionary (1913)

Tabby \Tab"by\, a.
   1. Having a wavy or watered appearance; as, a tabby
      waistcoat. --Pepys.

   2. Brindled; diversified in color; as, a tabby cat.

   {Tabby moth} (Zo["o]l.), the grease moth. See under {Grease}.