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length

noun (DISTANCE)
 
 
/leŋθ/

Definition

B1 [C or U] the measurement of something from end to end or along its longest side: The boat is ten metres in length. The length of the bay is approximately 200 miles. She planted rose bushes (along) the length of the garden (= the whole distance along it).Measurements in general [C] a piece of something such as string or pipe: a length of ropeWords meaning small pieces and amounts [C] a unit used in describing the distance by which a horse or boat wins a race, equal to the measurement from one end of the horse or boat to the other: We won by two lengths.Measurements in general [C] the distance from one end of a swimming pool to the other: She swims 40 lengths a day.Measurements in generalSwimming
(Definition of length noun (DISTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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