tumbler
nounUK /ˈtʌm.blər/
US /ˈtʌm.blɚ/
A tumbler is a cup with no handle that you drink from.
She poured water into a tumbler and drank it.
OTHER MEANINGS
2. A person who performs somersaults and acrobatic tricks.
The tumbler amazed the crowd with flips and rolls.
3. A glass with a rounded or flat bottom and no stem, used for serving drinks.
He served the juice in a tall tumbler.
4. A part in a lock that moves when the correct key is used.
The locksmith checked the tumblers inside the lock.