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log line

noun
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Definition of log line

: a line that is usually made of cord (as hemp, braided cotton twine) and that is used in gauging the speed of a ship or the velocity of a water current especially : such a line that is divided into knots (see knot sense 8a) and that has a log chip attached to one end and that runs out from a log reel

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“Log line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/log%20line. Accessed 18 Feb. 2020.

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