Related Clues:

• Santa's landing strip
• Fat ___
• Car top
• River mouth formation
• Heliport site
• American airline
• Jab target
• Verbal defiance, slangily
• Outer edge
• A river runs to it
• It may be forming at the mouth
• Pouter's protuberance
• Area around the mouth
• Greek triangle
• Sleigh landing site?