- either of two equal or corresponding parts into which something is or can be divided半, 一半：
two and a half years
两年半
the northern half of the island
岛的北半部
divided in half
分成两半
reduced by half.
减少了一半。
- either of two equal periods of time into which a sports game or a performance is divided（体育比赛或表演的）半场, 半时, 半局。
- Brit. informal half a pint of beer or a similar drink〈英, 非正式〉（啤酒等的）半品脱：
a half of bitter.
半品脱苦啤酒。
- informal a half-price fare or ticket, especially for a child〈非正式〉（尤指儿童的）半（价）票。
- Golf a score for an individual hole that is the same as one's opponent's【高尔夫】一穴击球得分与对手相等。
- an amount equal to a half半; 一半（的）：
as predeterminer half an hour半小时
almost half the children turned up
几乎有一半孩子来了
as pronoun half of the lectures are delivered by him这些讲座有一半是他做的
as adj. the last half century.后半个世纪。
- amounting to a part thought of as roughly a half（数量）大致到一半的, 近半的：
as predeterminer half the audience were blubbing away近半观众在不停地哭泣
as pronoun half of them are gatecrashers.他们中差不多有一半是不请自来的。
- to the extent of half以半的数量; 到一半的程度：
the glass was half full.
杯子装得半满。
- often in combination to a certain extent; partly在某种程度上; 部分地：
the chicken is half-cooked.
鸡煮得半熟。
a - and a half
- informal used to indicate that one considers a particular person or thing to be an impressive example of their kind〈非正式〉非常出色的, 非一般的, 典范的：
Aunt Edie was a woman and a half.
伊迪姑姑是女人中的典范。
at half cock
half the battle
- 见BATTLE.
half a chance
- informal the slightest opportunity〈非正式〉一点点机会, 很小的机会：
given half a chance he can make anything work.
只要给他一点点机会, 他什么都可以做到。
half an eye
- 见EYE.
the half of it
- usu. with negative informal the most important part or aspect of something〈非正式〉最重要的一部分（或一方面）：
you don't know the half of it.
你还不了解最重要的情况。
half one （two等）
- informal way of saying half past one (two, etc.)〈非正式〉同half past one （two 等）.
half past one （two等）
- thirty minutes after one (two, etc.) o'clock一（或两、三等等）点半。
half the time
- 见TIME.
not do things by halves
- do things thoroughly or extravagantly彻底地做事情; 大肆铺张地做事情。
not half
- not nearly远非, 相差甚远：
he is not half such a fool as they thought.
他远非他们认为的那么傻。
- informal not at all〈非正式〉一点也不, 毫不：
the players are not half bad.
球员们一点也不差。
- Brit. informal to an extreme degree; very much so〈英, 非正式〉非常, 极度地：
she didn't half flare up!
她大发雷霆。
too - by half
- used to emphasize something bad太, 过于：
the idea seems too superstitious by half.
这个想法似乎过于迷信。