waistn.[OE. wast; originally, growth, akin to AS. weaxan to grow; cf. AS. wstm growth. See Wax to grow.]()1. That part of the human body which is immediately below the ribs or thorax; the small part of the body between the thorax and hips.(Chaucer.)I am in the waist two yards about. (Shak.)2. Hence, the middle part of other bodies; especially (Naut.), that part of a vessel's deck, bulwarks, etc., which is between the quarter-deck and the forecastle; the middle part of the ship.()3. A garment, or part of a garment, which covers the body from the neck or shoulders to the waist line.()4. A girdle or belt for the waist.(Shak.)Waist anchor. See Sheet anchor, 1, in the Vocabulary.()