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The Collaborative International Dictionary of English v.0.48 (gcide)

Hogback \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}.
[1913 Webster]

2. (Naut.) See {Hogframe}.
[1913 Webster]

3. (Geol.) A ridge formed by tilted strata; hence, any ridge
with a sharp summit, and steeply sloping sides.
[1913 Webster]


Hogframe \Hog"frame`\, n. (Steam Vessels)
A trussed frame extending fore and aft, usually above deck,
and intended to increase the longitudinal strength and
stiffness. Used chiefly in American river and lake steamers.
Called also {hogging frame}, and {hogback}.
[1913 Webster]

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