a drinking glass with straight sides and no handle or stem.
Wine was sometimes drunk from glass tumblers .
an acrobat or gymnast, especially one who performs somersaults.
Clearly, we all have something to learn from these clowns and tumblers .
a pivoted piece in a lock that holds the bolt until lifted by a key.
Pieces fall comfortingly into place like tumblers in a well-oiled lock.