tranquilizer gun
A firearm that fires darts containing a sedative or anesthetic, used to immobilize animals or people without lethal force.
動物園では、危険な動物を捕獲するために麻酔銃が使われる。
At the zoo, tranquilizer guns are used to capture dangerous animals.
Compound of 麻酔 (masui, 'anesthesia') and 銃 (jū, 'gun').