n.1.(Mining) The adjustable socket, or step, of a millstone spindle.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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The company contacted four suppliers--Allied Tube & Conduit Corp., Appleton Electric Co., Bussman Division of Cooper Industries, and Bridgepot Fittings--to work out changes needed to the four basic transaction set mappings to make them universally compatible.