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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 underdrain
 地下排水管; 暗渠

From: Webster's Revised Unabridged Dictionary (1913)

 Un·der·drain n. An underground drain or trench with openings through which the water may percolate from the soil or ground above.

From: Webster's Revised Unabridged Dictionary (1913)

 Un·der·drain v. t. To drain by forming an underdrain or underdrains in; as, to underdrain land.
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