Definition of catheads:
(n) :
(nautical) A heavy piece of timber projecting somewhat horizontally from each side of the bow of a ship on which an anchor is raised or lowered, and secured when not used, from its stock end.
(n) :
(nautical) A decorative element at the end of such a timber that often depicts a cat's head.
(n) :
(technology, chiefly mining) A (small) capstan (“vertical cylindrical machine that revolves on a spindle, used to apply force to cables, ropes, etc.”) or windlass (“type of winch”) forming part of hoisting machinery.
(v) :
(transitive, nautical) Synonym of cat (“to hoist (an anchor) so that it hangs at the cathead (noun noun, sense 1.1)”)
(n) :
(UK, dialectal) A nodule of ironstone containing fossil remains.
(n) :
(US) Ellipsis of cathead biscuit (“a large fluffy biscuit, typically served with gravy”). [(US) A large fluffy biscuit, typically served with gravy.]