What is a mole, bank, or wharf, formed toward the sea, or at the side of a harbor, river, or other navigable water, for convenience in loading and unloading vessels. [Written also key.] called?

quay — A mole, bank, or wharf, formed toward the sea, or at the side of a harbor, river, or other navigable water, for convenience in loading and unloading vessels. [Written also key.]. (Webster's 1913.)

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