A small case or container, especially a round or cylindrical one. A tough sheath or membrane that encloses something in the body, such as a kidney, a lens, or a synovial joint. The foil or plastic covering the cork of a wine bottle. A dry fruit that releases its seeds by bursting open when ripe, such as a pea pod. The spore-producing structure of mosses and liverworts, typically borne on a stalk. (of a piece of writing) shortened but retaining the essence of the original; condensed.