What is a sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships. On the tawny sands and shelves. Milton. On the secret shelves with fury cast. Dryden called?

shelf — A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships. On the tawny sands and shelves. Milton. On the secret shelves with fury cast. Dryden. (Webster's 1913.)

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