The rails of a railroad.

To cover with metal; as, to metal a ship’s bottom; to
metal a road.

Courage; spirit; mettle. See Mettle.

Glass in a state of fusion.

The broken stone used in macadamizing roads and ballasting
railroads.

The substance of which anything is made; material; hence,
constitutional disposition; character; temper.

Ore from which a metal is derived; – so called by miners.

An elementary substance, as sodium, calcium, or copper,
whose oxide or hydroxide has basic rather than acid properties, as
contrasted with the nonmetals, or metalloids. No sharp line can be
drawn between the metals and nonmetals, and certain elements partake of
both acid and basic qualities, as chromium, manganese, bismuth, etc.

A mine from which ores are taken.

The effective power or caliber of guns carried by a vessel
of war.