by the (unit)

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by the (unit)

For each unit, as of items sold in this manner. How much does this meat cost by the pound?
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by the unit

Fig. each; per. (Used to designate the unit of measure, but not the rate of a measure.) Lettuce is sold by the head. Gas is sold by the gallon.
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by the

bye/by
By the way; incidentally.
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