butterfly dam


Definition of butterfly dam

  1. :  a movable steel dam pivoted at top and bottom and opened and closed by a rack-and-pinion mechanism and electric motor

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Origin and Etymology of butterfly dam

so called from its opening like the wings of a butterfly

Seen and Heard

What made you want to look up butterfly dam? Please tell us where you read or heard it (including the quote, if possible).


a trip made at another's expense

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