The phrase
"clicker sound" refers to the noise made by a device when a button or switch is pressed.
Full definition
This is why the treat should immediately follow
the clicker sound.
If you use a clicker, he'll look up just to check out that
clicker sound.
Clicker train: Teach the dog to associate
the clicker sound with «job well done.»
You need to train your puppy's brain to make the connection between
the clicker sound and the feeling of getting a reward.
Just substitute a hand signal for
the clicker sound.