Other forms: trickling; trickled; trickles
To trickle is to weakly flow out of something, like a faucet. A trickle is like a drip.
There are a lot of ways water can flow, but one type of slow dripping is called trickling. If your shower is only releasing a trickle of water, you're not going to get much of a shower. If it's raining — but only a trickle — you might not need an umbrella. A slightly leaky roof is trickling. A trickle is the opposite of a downpour or flood. Trickling can also be called dribbling.