Tabby \Tab"by\, a. 1. Having a wavy or watered appearance; as, a tabby waistcoat. --Pepys. [1913 Webster] 2. Brindled; diversified in color; as, a tabby cat. [1913 Webster] {Tabby moth} (Zool.), the grease moth. See under {Grease}. [1913 Webster]