BLOCK n.
or shell which is provided with a hook, eye, or strap, by which it may be attached to an object. It is used to change the direction of motion, as in raising a heavy object that can not be conveniently reached, and also, when two or more such sheaves are compounded, to change the rate of motion, or to exert increased f…
BONE v.
To sight along an object or set of objects, to see if it or they be level or in line, as in carpentry, masonry, and surveying. Knight. Joiners, etc., bone their work with two straight edges. W. M. Buchanan.