Meaning of “over” - Learner’s Dictionary

over

adverb, preposition uk us /ˈəʊvər/
ABOVE

B1 above or higher than something:

The sign over the door said "Private, No Entry".
A fighter plane flew over.
SIDE TO SIDE

B1 If you walk, jump, climb, etc over an object or place, you go from one side of it to the other side:

We had to climb over large rocks to get to the beach.
AMOUNT

A2 more than a particular amount, number, or age:

Over 5,000 Internet users contact our website every year.
Suitable for children aged 5 and over.
OPPOSITE SIDE

B1 on or to the opposite side of a road, bridge, path, etc:

The station is over the bridge.
COVER

A2 covering someone or something:

She placed the quilt over the bed.
DOWN

down from a higher to a lower position:

The little boy fell over and started to cry.
She tripped over the rug.
PLACE

B1 to a particular place:

Could you bring the plates over here (= bring them to this place).
Why don't you come over (= come to my home) on Friday evening?
He was sent over there during the war.
TIME

B1 during a particular period of time:

I was in Seattle over the summer.
ABOUT

connected with or about:

It's stupid arguing over something so trivial.
NOT USED

not used:

There's some food left over from the party.
USING

B2 using the radio or telephone:

I made the booking over the phone.
be/get over sth

to feel better after being sick or feeling unhappy about something:

It took him months to get over breaking up with his girlfriend.
do sth over US

to do something again from the beginning because you did not do it well the first time:

You've ruined it! Now I'll have to do it over.
(all) over again

B2 again from the beginning:

It looks all messy. I'm going to have to do it all over again.
over and over (again)

B2 repeatedly:

He was whistling the same tune over and over.
roll/turn, etc (sth) over

B2 to move so that a different part is showing, or to make something do this:

She turned the page over.
CONTROL

in control of someone or something:

Her husband has a lot of influence over her.
She manages three people and has a sales director over her (= with a higher rank than her).

(Definition of “over adverb, preposition” from the Cambridge Learner’s Dictionary © Cambridge University Press)