little, small
shallow
clear
fast-flowing, rushing
bubbling
We picnicked beside a bubbling stream.

trickling
meandering
mountain, underground
salmon, trout

cross, ford
pollute

flow, run, trickle
The stream flows through a narrow valley.

bed

across a/the stream
down a/the stream, up a/the stream
in a/the stream
There are small fish in the stream.

on a/the stream
a leaf floating on the stream

the edge of the stream, the side of the stream

thin
air, gas
jet
The jet stream in the northern hemisphere moves northward.

blood (usually bloodstream)
The drug is not absorbed into the bloodstream.

emit
let in

flow
A stream of blood flowed from the wound.

stream of

constant, continuous, endless, never-ending, steady, unending
a constant stream of letters
Cars filed past in an endless stream.

funding, income, revenue
By licensing their works, artists can create an ongoing revenue stream.

audio, data, video
You can listen to the live audio stream.

generate
The computer generates a steady stream of emails.

send
let loose, let out
He let loose a stream of abuse.

stream of
a stream of racist abuse
We have established several different streams of funding. (esp. BrE)

stream of consciousness
the stream-of-consciousness technique in modern literature