pounder
n
1 thing that weighs a pound (1 lb) 一磅重的东西.
2 (in compounds 用以构成复合词)
(a) thing that weighs a specified number of pounds ...磅重的东西
a three-pounder, eg a fish weighing 3 lb 三磅重的东西(如3磅重的一条鱼).
(b) gun that fires a shell of the specified number of pounds 发射...磅重炮弹的炮
an eighteen-pounder, ie a gun that fires shells weighing 18 lb each 发射18磅重炮弹的炮.