DuckCorp Dico

Found one definition

1.                 From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   columnar jointing /kˈɒləmnˌɑː dʒˈɔɪntɪŋ/
   säulige Absonderung
      Synonym: basaltic jointing
    see: detachment, jointing, parting, ball structure, prismatic jointing