abb I. \ˈab, ˈaa(ə)b\noun (-s) Etymology: (assumed) Middle English, from Old English āb, āweb, ōweb — more at woof 1. a.: coarse wool from the inferior parts (as the skirtings and edges) of a fleece b.: a warp yarn made of abb wool 2.Britain: a filling pick in weaving II. abbreviation abbess; abbey; abbot