vi.

1. 跌倒；滚下；坠落
   Tom tumbled over and hit his head on the concrete.

   汤姆摔倒，头撞到水泥地。

2. 被绊倒；被倾覆
   He tumbled over the cat.

   他被那只猫绊倒了。

3. 打滚；辗转；翻筋斗
   The sick child tumbled restlessly in his bed.

   生病的小孩在床上辗转反侧焦躁不安。

4. （房屋等）倒塌[（+down）]
   It only needed a push and the whole building would come tumbling down.

   只要稍稍一推，那整幢房子就会倒塌下来。

5. （物价等）暴跌
   Stock market prices tumbled after rumors of a rise in interest rates.

   谣传利率上升之后，股票市场价格猛跌。

6. 匆匆忙忙地做；跌跌撞撞地走
   He tumbled downstairs.

   他跌跌撞撞下了楼梯。

7. 【英】【俚】突然明白[（+to）]
   It was a long time before she tumbled to what I meant.

   她用了很长时间才明白了我的意思。

8. 偶然发现
   Quite accidentally, the police tumbled on the answer to the mystery.

   警察出乎意外地找到了那疑案的答案。

vt.

1. 使跌倒；使滚下；使坠落
   He tumbled me over backwards.

   他把我向后摔倒。

2. 乱扔；弄乱[O]
   I could just see her face and her tumbled hair.

   我只能看见她的脸和蓬乱的头发。

   He tumbled his clothes and books into a big sack.

   他把他的衣服和书胡乱装进一只大口袋。

3. 使暴跌；颠覆
4. 使翻滚；用烘干机烘干（衣服）
   You can tumble the clothes dry in a dryer.

   你可以用烘干机将衣服烘干。

n.[C]

1. 跌跤；坠落
   The tumble hurt him badly.

   这一跤把他摔得很疼。

2. 倒塌
3. （价格等的）暴跌
   Stock prices took a tumble in the afternoon.

   股票价格下午猛跌。

4. 倒台，垮台
5. 翻滚；翻筋斗
   The child is practicing a tumble.

   那孩子在练习翻筋斗。

6. 混乱
   His desk was a complete tumble of papers and books.

   他的书桌上乱糟糟地堆满了报纸和书籍。

v.

1. fall suddenly, clumsily, or headlong.
   ▸perform acrobatic feats, typically handsprings and somersaults.
2. decrease rapidly in amount or value.
3. dry in a tumble dryer.
4. rumple; disarrange.
5. (tumble to) informal come to understand; realize:
   he's tumbled to the fact that he was deceived.
6. informal have sex with.
7. clean (castings, gemstones, etc.) in a tumbling barrel.

n.

1. an instance of tumbling.
2. an untidy or confused arrangement or state.
3. a handspring or other acrobatic feat.
4. US informal a friendly sign of recognition or interest.