Related Clues:

• Fourth letter of Greek alphabet
• Triangular land at mouth of river
• Oral cavity
• Triangular patch of land at mouth of river
• The fourth Greek letter found at river's mouth
• Area where a river divides before entering the sea
• The Greek D (5)
• Fourth letter of the Greek alphabet
• Big mouth may have dealt with this
• Sounds as if one has been given a hand that comes at a mouth
• The end of the Dee?
• Where you take in the fly-by-night around you
• It sounds as if one gave a hand to a wet mouth
• By the sound of it, given a hand at the end of the river
• Back at what the leader did for the river