tumbler

The noun tumbler can refer either to an acrobat who performs gymnastic tricks or to a tall drinking glass with straight sides. If you own a lot of glass tumblers, you probably shouldn't let a troupe of tumblers practice back flips in your kitchen.

Gymnasts are often called tumblers because they are skilled at tumbling, namely skills like round-offs, flips, aerials, and back handsprings. When an object is a tumbler, it's simply a drinking glass. Though today's drinking tumblers have flat bottoms, back in the 15th century they were rounded or pointed and couldn't be set down between drinks, or else they would topple over — or tumble.

Primary Meanings of tumbler

1.
n
a gymnast who performs rolls and somersaults and twists etc.
2.
n
a glass with a flat bottom but no handle or stem; originally had a round bottom
3.
n
a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown
Full Definitions of tumbler
1

n a gymnast who performs rolls and somersaults and twists etc.

Types:
turner
a tumbler who is a member of a turnverein
Type of:
gymnast
an athlete who is skilled in gymnastics

n pigeon that executes backward somersaults in flight or on the ground

Synonyms:
roller, tumbler pigeon
Type of:
domestic pigeon
domesticated pigeon raised for sport or food
2

n a glass with a flat bottom but no handle or stem; originally had a round bottom

Type of:
drinking glass, glass
a container for holding liquids while drinking
3

n a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown

Types:
lever, lever tumbler
a flat metal tumbler in a lever lock
pin, pin tumbler
cylindrical tumblers consisting of two parts that are held in place by springs; when they are aligned with a key the bolt can be thrown
Type of:
impediment, impedimenta, obstructer, obstruction, obstructor
any structure that makes progress difficult

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