What is the process of redistilling spirits, to improve the strength and flavor. Doubling a cape, promontory, etc. (Naut.), sailing around or passing beyond a cape, promontory, etc called?

doubling — The process of redistilling spirits, to improve the strength and flavor. Doubling a cape, promontory, etc. (Naut.), sailing around or passing beyond a cape, promontory, etc. (Webster's 1913.)

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