wellhead

from WordNet (r) 3.0 (2006)

wellhead
    n 1: the source of water for a well [syn: {wellhead},
         {wellspring}]
    2: a structure built over a well

from The Collaborative International Dictionary of English v.0.48

Wellhead \Well"head`\, n.
   A source, spring, or fountain.
   [1913 Webster]

         At the wellhead the purest streams arise. --Spenser.
   [1913 Webster]

         Our public-school and university life is a great
         wellhead of new and irresponsible words. --Earle.
   [1913 Webster]