Un"der*drain` (?), n. An underground drain or trench with openings through which the water may percolate from the soil or ground above.

Un`der*drain" (?), v. t. To drain by forming an underdrain or underdrains in; as, to underdrain land.

Un"der*drain` (?), n. An underground drain or trench with openings through which the water may percolate from the soil or ground above.

Un`der*drain" (?), v. t. To drain by forming an underdrain or underdrains in; as, to underdrain land.