背spec1(of a mountain, せ); 脊(of a mountain, せき); 気圧の尾根River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 山稜(sanryō)River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 山背参拝、 さんぱいRiver and Water Resources Glossary (Infrastructure Development Institute Japan) ; 隆線Life Science Dictionary (Shuji Kaneko)