over  (AMOUNTS AND OCCURRENCES)
1 prep If something is over a particular amount, measurement, or age, it is more than that amount, measurement, or age.
Cigarettes kill over a hundred thousand Britons every year..., I met George well over a year ago.
Over is also an adverb., adv amount and ADV
...people aged 65 and over.
2 prep-phrase Over and above an amount, especially a normal amount, means more than that amount or in addition to it.
Expenditure on education has gone up by seven point eight per cent over and above inflation...
3 adv If you say that you have some food or money over, you mean that it remains after you have used all that you need.
be ADV, n ADV, ADV after v
Larsons pay me well enough, but there's not much over for luxuries when there's two of you to live on it..., Primrose was given an apple, left over from our picnic lunch.
4 adv If you do something over, you do it again or start doing it again from the beginning.
(AM) ADV after v
She said if she had the chance to do it over, she would have hired a press secretary...
5 If you say that something happened twice over, three times over and so on, you are stating the number of times that it happened and emphasizing that it happened more than once.
twice over phrase PHR after v (emphasis)
He had to have everything spelled out twice over for him.
6 If you do something over again, you do it again or start doing it again from the beginning.
over again phrase PHR after v
If I was living my life over again I wouldn't have attended so many committee meetings.
7 If you say that something is happening all over again, you are emphasizing that it is happening again, and you are suggesting that it is tiring, boring, or unpleasant.
all over again phrase PHR after v (emphasis)
The whole process started all over again..., He had to prove himself all over again.
8 If you say that something happened over and over or over and over again, you are emphasizing that it happened many times.
over and over phrase PHR after v (emphasis)
He plays the same songs over and over..., `I don't understand it,' he said, over and over again.