stream1 W3 [countable]
a natural flow of water that moves across the land and is narrower than a river
a long and almost continuous series of events, people, objects, etc
a stream of traffic
a stream of abuse
steady/constant/endless etc stream
A steady stream of visitors came to the house.
a flow of water, air, smoke etc, or the direction in which it is flowing: ➔ Gulf Stream, jet stream
A stream of cold air rushed through the open door.
4 especially British EnglishTI
to start working or producing something:
The new factory will come on stream at the end of the year.
a level of ability within a group of students of the same age:
Kim's in the top stream.