n.

1. 金属；合金[C][U]
   Heat expands metal.

   热使金属膨胀。

2. 金属制品[C]
3. 【英】（铁路的）钢轨[P]
4. 【英】筑路碎石[U]
5. 铸铁熔液，玻璃液[U]

vt.

1. 用金属包；用金属装配
2. 【英】用碎石筑（路）

n.

1. a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity, e.g. iron, copper, and silver.
   ▸ (metals) the steel tracks of a railway.
   ▸Heraldry  gold and silver.
2. (also road metal) broken stone used in road-making.
3. molten glass before it is blown or cast.
4. heavy metal or similar rock music.

v.

1. make from or coat with metal.
2. Brit. make or mend (a road) with road metal.