The Collaborative International Dictionary
Milled lead
Milled \Milled\ (m[i^]ld), a.
Having been subjected to some process of milling.
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Specifically: Having multiple fine grooves on the rim, in the direction from obverse to reverse; -- of coins. Coins of silver and gold were milled to make it impossible for uncrupulous persons to shave small pieces from the edge without detection.
Milled cloth, cloth that has been beaten in a fulling mill.
Milled lead, lead rolled into sheets.