Related Clues:

• Buck
• His real name was Arthur
• With 15-Across, linguini topping
• First name in comedy
• Dollar, in slang
• Smacker
• Hardly a blabbermouth
• Symbol of noncommunication
• Shut (up)
• Marx with a horn
• Bisque bit
• A Marx brother
• Chowder morsel
• Quahog, for one
• First name in comedic brothers