Why is a glass called a 'tumbler'?
Question
Why is a drinking glass known as a ‘tumbler’?Stephen, Streatham
Answer
** Definitive **Name: Stan, Gillingham
Qualification: I’ve been to medieval re-enactments
Answer: Originally, back in medieval times, the glasses used to have rounded bottoms, so you couldn’t put them down or they would tumble over. Early glass-blowing had not perfected the art of making a flat bottom.