Related Clues:

• Large inlet
• Stuff oneself (with) - Cheddar, for example
• Ravine - overeat
• Very deep chasm
• Deep cleft in ground
• Space (maybe for a year?)
• Old Ethiopian's not half deep
• Generation separator
• Reason for braces, perhaps
• Buoy, say, between a boat just keeps going down
• Going west, drag empty coach in ravine
• Front half of cat only — it has no bottom
• Space between teeth, e.g
• Gaping gorge
• Can way out there be so far down?