
1) Druid stone 2) Druid stone of England 3) English druid stone
Found on
https://www.crosswordclues.com/clue/sarsen

Sarsen stones are sandstone blocks found in quantity in the United Kingdom on Salisbury Plain, the Marlborough Downs, in Kent, and in smaller quantities in Berkshire, Essex, Oxfordshire, Dorset and Hampshire. They are the post-glacial remains of a cap of Cenozoic silcrete which once covered much of southern England, a dense, hard rock created from...
Found on
http://en.wikipedia.org/wiki/Sarsen

• (n.) One of the large sandstone blocks scattered over the English chalk downs; -- called also sarsen stone, and Druid stone.
Found on
http://thinkexist.com/dictionary/meaning/sarsen/

(from the article `Stonehenge`) ...it, all interrupted by an entrance gap on the northeast, leading to a straight path called the Avenue. At the centre of the circle is a stone ...
Found on
http://www.britannica.com/eb/a-z/s/33
Sar'sen noun [ Etymol. uncertain; perhaps for
saracen stone , i.e., a heathen or pagan stone or monument.] One of the large sandstone blocks scattered over the English chalk downs; -- called also
sarsen stone , and
Druid stone . [ Eng.]
Found on
http://www.encyclo.co.uk/webster/S/18
No exact match found.