o‧ver‧flow1 [intransitive and transitive]
if a river, lake, or container overflows, it is so full that the liquid or material inside flows over its edges:
The drains flooded and water overflowed down the main street.
The river had overflowed its banks.
wastebins overflowing with plastic cups
to have a lot of something
The garden overflows with colour.
He was overflowing with good ideas.
if a place overflows with people or people overflow into a place, there are too many of them to fit into it
Hospitals were reported to be overflowing with dead and wounded.
The house was full and people were overflowing into the street.
to have a very strong feeling
My heart was overflowing with gratitude.
to be completely full:
One wall was filled to overflowing with books.