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The character "槔" is used almost exclusively in the compound "桔槔" to refer to a well sweep, an ancient irrigation tool. Its structure is a phono-semantic compound, combining the wood radical (木) on the left, denoting the material from which the device is constructed, with the component "皋" on the right, which primarily provides phonetic indication. The meaning of "槔" has remained specific to this mechanical apparatus throughout its history, without significant semantic expansion or shift.
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