Self-supporting. Held by itself; not depending upon outside aid.
Shank. Usually the handle, or portion to which the handle is attached.
Slitting gage. A tool which is designed to cut along a certain line guided by an adjustable fence.
Soffit. The under side of an arch.
Solid. Not hollow; full of matter; having a fixed form; hard; opposed to liquid or fluid.
Spindle. A small mandrel; an arbor; a turning shaft.
Springer. The post or point at which an arch rests upon its support, and from which it seems to spring.
Sphere. A body or space continued under a single surface which, in every part, is equally distant from a point within called its center.
Spur. A small part jutting from another.
Strike plate. A plate serving as a keeper for a beveled latch bolt and against which the latter strikes in closing.