suction cup
device or object that uses the negative fluid pressure of air or water to adhere to nonporous surfaces, creating a partial vacuum
en-US/ˈsʌkʃən ˈkʌp/
en-GB/ˈsʌkʃən ˈkʌp/
device or object that uses the negative fluid pressure of air or water to adhere to nonporous surfaces, creating a partial vacuum