What is an upright piece of round timber, in a whaleboat, over which a turn of the line is taken when it is running out too fast. Ham. Nav. Encyc called?

loggerhead — (Naut.) An upright piece of round timber, in a whaleboat, over which a turn of the line is taken when it is running out too fast. Ham. Nav. Encyc. (Webster's 1913.)

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