Trickle [v]

~leak/ drip/ dribble/ drop

Rain trickled down the windows. ~ Rain dripped down the windows.

The audience trickled into the theater in twos and threes.  ~The audiences moved slowly.

The engine was trickling oil. (An oil leak)

Trickle [n] 

Only a trickle of water came from the faucet/ tap. ~a small amount of water flowing from the tap