a drain placed beneath the surface of cultivated fields, streets, etc.
verb (used with object)
to equip or supply with an underdrain or underdrains.
noun (ˈʌndəˌdreɪn)
a drain buried below agricultural land
verb (ˌʌndəˈdreɪn)
to bury such drains below (agricultural land)


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    [uhn-der-drey-nij] /ˈʌn dərˌdreɪ nɪdʒ/ noun 1. drainage of agricultural lands and removal of excess water and of alkali by drains buried beneath the surface.

  • Draught

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  • Underdraw

    verb (used with object), underdrew, underdrawn, underdrawing. 1. to line the underside of (a structure, as a floor) with plasterwork, boarding, or the like.

  • Underdrawers

    [uhn-der-drawrz] /ˈʌn dərˌdrɔrz/ noun, (used with a plural verb) 1. an undergarment for the lower part of the body, typically covering at least part of the legs. Compare drawer (def 2).

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