Tailstock

Business / Machine Shop / Tailstock: That part of a machine tool, such as a lathe or cylindrical grinder which supports the end of a workpiece with a center. It may be positioned at any point along the way of the bed and may be offset from center to machine tapers.
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Center

Technology / Aviation / Center: An Air Route Traffic Control Center (ARTCC). MORE

Live Center

Business / Machine Shop / Live Center: See center, live. MORE

Dead Center

Business / Machine Shop / Dead Center: A center that does not rotate: commonly found on the tailstock of a lathe. Also, an expression for the exact center of an object. MORE