tranquilizer
🇺🇸
/ˈtræŋkwəlaɪzər/
🇬🇧
/ˈtræŋkwəlaɪzə(r)/
A medication that helps to calm a person or animal.
The doctor prescribed a tranquilizer to help her sleep at night.
醫生開了一種鎮靜劑幫助她在夜間睡眠。