dogbone. The small Mylar or holographic seal placed over the edge of a music or data CD as increased protection against its ever being opened.
This one is likely to be short-lived, as recording companies have learned that consumers dislike the demanding process of opening their products and as digital files replace hard copy distribution.
dogbone or dog and bone. Telephone, especially the handset, in British and Australian slang.
This is not so common in the U.S.
About the illustrations: Figure 1 is a series of holographic seals for sale by Holographic Label Converting, Inc. Figure 2 animated by the author.