mole drain

British  

noun

1. an underground cylindrical drainage channel cut by a special plough to drain heavy agricultural soil

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Example Sentences

In some countries, saline seeps have been approached with tile or mole drain systems, which intercept water before it can feed the groundwater, but that isn’t the right approach in the semi-arid MonDak.

From Washington Times

These gutters being at a distance from the tree rows, can be deepened, and the tile laid, without disturbing the roots; or the mole drain plow may be drawn through these furrows, if the subsoil be of a suitably tenacious character to admit of the use of this implement.

From Project Gutenberg