releaser
/ˈriːliːzər/Definitions
1. noun
A person or thing that releases something, especially a substance, gas, or animal.
“The valve was a releaser of compressed air, allowing the pressure to drop rapidly.”
2. verb
To release or cause something to be released, especially a substance, gas, or animal.
“The firework releaser was activated, and the colorful explosion lit up the night sky.”