Search Result for "boulder clay":
Wordnet 3.0

NOUN (1)

1. unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together;
[syn: till, boulder clay]



WordNet (r) 3.0 (2006):

boulder clay
    n 1: unstratified soil deposited by a glacier; consists of sand
         and clay and gravel and boulders mixed together [syn:
         till, boulder clay]