n.

1. 落下；跌倒[C][（+from）]
   The fall from his horse broke his arm.

   他从马上跌落摔坏了胳膊。

2. 降落；降落量[C]
   During the afternoon, there was a sudden heavy fall of snow.

   下午突然下起了大雪。

3. 下降；减少[C][（+in）]
   We are expecting a fall in stock prices.

   我们预料股市价格将要下跌。

4. 落差[S][（+of）]
   The fall of the river here is three feet.

   这里河水落差为三英尺。

5. （政府）垮台；（城市、要塞）陷落[the S]
   The people did not cease to resist even after the fall of the capital.

   即使在首都失陷以后人民也没有停止抵抗。

6. 堕落[S]
   The play was about the fall of an honest man.

   这出戏是关于一个诚实的人堕落的故事。

7. 【美】秋天[the S]
   I may be going back in the fall.

   我可能在秋天回去。

8. 瀑布[P]

vi.

1. 落下；降落
   Leaves fall from the trees.

   叶子从树上落下。

2. 跌落；跌倒[（+over/down）]
   She slipped and fell over.

   他滑了一下跌倒了。

3. 下降；减退；减弱
   Production costs fell by 30%.

   生产成本下降了百分之三十。

4. 【书】战死，阵亡[L]
   Many men fell in battle.

   许多人在战斗中阵亡。

5. 变成；成为[L]
   They first met at university and later fell in love.

   他们在大学里初次相遇，后来相爱。

   After a while I fell asleep.

   一会儿以后我睡着了。

6. （政府、政权等）垮台
   The Government has fallen again.

   政府又垮台了。

7. （城市、阵地等）陷落
   The city fell to the enemy.

   该城失陷了。

8. （脸色）变阴沉
   His face suddenly fell.

   他的脸色突然一沉。

9. （黑夜）降临；（目光、重音）落在
   The accent falls on the first syllable.

   重音落在第一个音节上。

   Darkness was falling fast.

   天很快黑了下来。

10. 下垂[Q][L]
    Her hair falls to her shoulders.

    她长发披肩。

11. （地面）倾斜；（河、水）流入[Q]
    The land falls gently to the sea.

    地面缓缓地向海边倾斜。

12. 被说出[（+from）][L]
    Not a word fell from his lips.

    他一声不吭。

13. 属（于）[（+into）]
    They fall into different categories.

    他们属于不同的类别。

14. 【旧】堕落

v.

1. move from a higher to a lower level, typically rapidly and without control.
   ▸ (fall off) become detached and drop to the ground.
   ▸hang down.
   ▸slope downwards.
   ▸(of a person's face) show dismay or disappointment by appearing to droop.
2. cease to be standing or upright; collapse.
3. decrease in number, amount, intensity, or quality.
4. pass into a specified state:
   the buildings fell into disrepair.
   ▸occur or arrive.
   ▸ (fall to doing something) begin to do something.
5. be captured or defeated.
   ▸Cricket  (of a wicket) be taken by the bowling side.
   ▸archaic yield to temptation.
6. be classified in the way specified.

n.

1. an act of falling.
   ▸Wrestling  a move which pins the opponent's shoulders on the ground for a count of three.
   ▸a downward difference in height between parts of a surface.
   ▸a sudden onset or arrival.
2. a thing which falls or has fallen.
   ▸a waterfall.
3. a decrease.
4. a defeat or downfall.
   ▸ (the Fall of Man) the lapse of humankind into a state of sin, ascribed in Jewish and Christian theology to the disobedience of Adam and Eve.
5. N. Amer. autumn.