Related Clues:

• Spine words
• A challenger might go after one
• What cover letters spell out?
• Book-flap prose
• Words on a spine
• Decoration, in a way
• Right to ownership
• Marquee posting
• Sir or madam, as the case may be
• Brief promotional prose
• Name on a spine
• Dom or earl
• It may come with a belt
• Get a handle on?
• Duke, say