Related Clues:

• 'I'm speechless!'
• Start for "bucks"
• Part of a generic dog bark
• Open-mouthed Facebook reaction
• "Ooh!" or "Whoa!"
• Superb swimmer ain't swimming
• A jewel has turned up -- it's huge
• Prefix with "bucks" or "mansion"
• Extremely clever thing in the ring, perhaps
• Really large
• Some pachyderm, e.g. African jumbo
• Exceptionally clever
• Content of Christmastime games could lead to something big
• "Zowee!"
• ___ Millions