Related Clues:

• Material for some pipes
• What a roller derby queen throws
• Common pipe material, briefly
• Letter-shaped building addition
• Pipe elbow
• Tool for forcing one's way through a crowd
• Prickly plant (Var.)
• Middle of a melee?
• The radius extends from it
• Lemon head?
• Lemonhead?
• Certain big couch shape
• Wing of a building, perhaps
• Orthogonal joint
• ___ patch (Uncle Remus setting)