hogback

noun3

1. •
   A sharp steep-sided ridge formed by the erosion of tilting strata,

   • Without further parley Garland rode off up the hog's-back and the sheriff rode off down it … — 1920
2. •
   A Viking grave marker taking the form of a recumbent monument, generally with a curved (hogbacked) ridge and outwardly curved sides.
3. •
   A hogframe.