A heavy, pliable, inelastic metal element, having a bright, bluish color, but easily tarnished; both malleable and ductile, though with little tenacity. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82, symbol Pb (from Latin plumbum).
In a steam engine, the width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke.
(newspapers) A teaser; a lead-in; the start of a newspaper column, telling who, what, when, where, why and how. (Sometimes spelled as lede for this usage to avoid ambiguity.)
To guide or conduct, as by accompanying, going before, showing, influencing, directing with authority, etc.; to have precedence or preeminence; to be first or chief; β used in most of the senses of the transitive verb.