weald clay

from The Collaborative International Dictionary of English v.0.48

Weald \Weald\, n. [AS. See {Wold}.]
   A wood or forest; a wooded land or region; also, an open
   country; -- often used in place names.
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         Fled all night long by glimmering waste and weald,
         And heard the spirits of the waste and weald
         Moan as she fled.                        --Tennyson.
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   {Weald clay} (Geol.), the uppermost member of the Wealden
      strata. See {Wealden}.
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