用法:
1 thing that weighs a pound (1 lb) 一磅重的东西.

用法:
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.

• notable(noticeable)
• note(notice)
• nothing but(nothing else but)
• nothing else than(nothing less than)
• nothing(no thing)
• notorious(well-known)
• now and then(then and there)
• nowaday （ s ）(at the present time)
• O (oh)
• object(have no objection to)
• object(object to)
• oblige sb by doing sth(oblige sb to do sth)
• observance(observation)
• occupant(occupier)
• of a day(of the day)
• of a kind(of the kind)
• of a sort(of the sort)
• of age(of an age)
• of age(of one's age)
• of moment(of the moment)
• of no avail(to no avail)
• of no effect(to no effect)
• of one's own accord(with one accord)
• of one's own will(under one's will)
• of one's own(on one's own)