Hog"back` (?), n.
1. Arch.
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.
See Hogframe.
3. Geol.
A ridge formed by tilted strata; hence, any ridge with a sharp summit, and steeply sloping sides.
© Webster 1913.