HOGBACK
hogback, horseback
(noun) a narrow ridge of hills
Source: WordNet® 3.1
Etymology
Noun
hogback (plural hogbacks)
(geology) A sharp steep-sided ridge formed by the erosion of tilting strata
A hogframe.
A Viking grave marker taking the form of a recumbent monument, generally with a curved (hogbacked) ridge and outwardly curved sides.
Source: Wiktionary
Hog"back`, n.
1. (Arch.)
Definition: An upward curve or very obtuse angle in the upper surface of
any member, as of a timber laid horizontally; -- the opposite of
camber.
2. (Naut.)
Definition: See Hogframe.
3. (Geol.)
Definition: A ridge formed by tilted strata; hence, any ridge with a sharp
summit, and steeply sloping sides.
Source: Webster’s Unabridged Dictionary 1913 Edition