n. 一磅重的东西, 捣碎者, 杵, 捣具, 重...磅的东西

Pounder \Pound"er\, n.
1. One who, or that which, pounds, as a stamp in an ore mill.

2. An instrument used for pounding; a pestle.

3. A person or thing, so called with reference to a certain
number of pounds in value, weight, capacity, etc.; as, a
cannon carrying a twelve-pound ball is called a twelve
pounder.

Note: Before the English reform act of 1867, one who was an
elector by virtue of paying ten pounds rent was called
a ten pounder.