Related Clues:

• Chatter away
• Leno's prominence
• Mouth mover
• Jabber vociferously
• Paleontologist's discovery
• Uppercut target
• Talk on and on
• Face part
• It's big on Leno
• Skull part
• Voice box
• Moose feature
• Maxilla or mandible
• Voice source
• It's down in the mouth