Tra từ over - Từ điển Oxford Advanced Learner 8th

over adverb, preposition, noun BrE [ˈəʊvə(r)] NAmE [ˈoʊvər]
adverb For the special uses of over in phrasal verbs, look at the entries for the verbs. For example take sth over is in the phrasal verb section at take.
1. downwards and away from a vertical position
• Try not to knock that vase over.
• The wind must have blown it over.
2. from one side to another side
• She turned over onto her front.
• The car skidded off the road and rolled over and over.
3. across a street, an open space, etc
• I stopped and crossed over.
• He rowed us over to the other side of the lake.
•They have gone over to France.
•This is my aunt who's over from Canada.
•I went over (= across the room) and asked her name.
•Put it down over there.
4. so as to cover sb/sth completely
• The lake was frozen over.
• Cover her over with a blanket.
5. above; more
•children of 14 and over
• You get an A grade for scores of 75 and over.
6. remaining; not used or needed
• If there's any food left over, put it in the fridge.
7. again
• He repeated it several times over until he could remember it.
• (NAmE) It's all wrong— you'll have to do it over.
8. ended
• By the time we arrived the meeting was over.
• Thank goodness that's over!
•I was glad when it was over and done with.
9. used to talk about sb/sth changing position
• He's gone over to the enemy (= joined them).
• Please change the wheels over (= for example, put the front wheels at the back).
•Let's ask some friends over (= to our home).
•Hand over the money!
10. used when communicating by radio
•Message received. Over (= it is your turn to speak).
•Message understood. Over and out.

Word Origin:
Old English ofer, of Germanic origin; related to Dutch over and German über, from an Indo-European word (originally a comparative of the element represented by -ove in above) which is also the base of Latin super and Greek huper.
Idioms: ↑over again ▪ ↑over against something ▪ ↑over and above ▪ ↑over and over ▪ ↑over to you

preposition For the special uses of over in phrasal verbs, look at the entries for the verbs. For example get over sth is in the phrasal verb section at get.
1. resting on the surface of sb/sth and partly or completely covering them/it
• She put a blanket over the sleeping child.
• He wore an overcoat over his suit.
•She put her hand over her mouth to stop herself from screaming.
2. in or to a position higher than but not touching sb/sth; above sb/sth
• They held a large umbrella over her.
• The balcony juts out over the street.
•There was a lamp hanging over the table.
3. from one side of sth to the other; across sth
•a bridge over the river
• They ran over the grass.
• They had a wonderful view over the park.
4. on the far or opposite side of sth
• He lives over the road.
5. so as to cross sth and be on the other side
• She climbed over the wall.
6. falling from or down from a place
• The car had toppled over the cliff.
• He didn't dare look over the edge.
7. all ~ in or on all or most parts of sth
• Snow is falling all over the country.
• They've travelled all over the world.
•There were papers lying around all over the place.
8. more than a particular time, amount, cost, etc
•over 3 million copies sold
• She stayed in Lagos for over a month.
• He's over sixty.
9. used to show that sb has control or authority
• She has only the director over her.
• He ruled over a great empire.
•She has editorial control over what is included.
10. during sth
• We'll discuss it over lunch.
• Over the next few days they got to know the town well.
•She has not changed much over the years.
•He built up the business over a period of ten years.
•We're away over (= until after) the New Year.
11. past a particular difficult stage or situation
• We're over the worst of the recession.
• It took her ages to get over her illness.
12. because of or concerning sth; about sth
•an argument over money
•a disagreement over the best way to proceed
13. using sth; by means of sth
• We heard it over the radio.
• She wouldn't tell me over the phone.
14. louder than sth
•I couldn't hear what he said over the noise of the traffic.

Word Origin:
Old English ofer, of Germanic origin; related to Dutch over and German über, from an Indo-European word (originally a comparative of the element represented by -ove in above) which is also the base of Latin super and Greek huper.

Which Word?:
above / over
Above and over can both be used to describe a position higher than something: ▪ They built a new room above/over the garage. When you are talking about movement from one side of something to the other, you can only use over: ▪ They jumped over the stream. Over can also mean ‘covering’: ▪ He put a blanket over the sleeping child.
Above and over can also mean ‘more than’. Above is used in relation to a minimum level or a fixed point: ▪ 2 000 feet above sea level ◇ ▪ Temperatures will not rise above zero tonight. Over is used with numbers, ages, money and time: ▪ He’s over 50. ◇ ▪ It costs over £100. ◇ ▪ We waited over 2 hours.

noun (in ↑cricket)
a series of six balls bowled by the same person
• Chadwick dismissed two batsmen in the same over.

Word Origin:
[over] Old English ofer, of Germanic origin; related to Dutch over and German über, from an Indo-European word (originally a comparative of the element represented by -ove in above) which is also the base of Latin super and Greek huper.