अर्थ : A gymnast who performs rolls and somersaults and twists etc..

अर्थ : A glass with a flat bottom but no handle or stem. Originally had a round bottom.

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

अर्थ : Pigeon that executes backward somersaults in flight or on the ground.